| 1 | ;;+----------------------------------------------------------------------------- |
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| 2 | ;;+ Isidorus |
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| 3 | ;;+ (c) 2008-2010 Marc Kuester, Christoph Ludwig, Lukas Georgieff |
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| 4 | ;;+ |
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| 5 | ;;+ Isidorus is freely distributable under the LLGPL license. |
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| 6 | ;;+ You can find a detailed description in trunk/docs/LLGPL-LICENSE.txt and |
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| 7 | ;;+ trunk/docs/LGPL-LICENSE.txt. |
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| 8 | ;;+----------------------------------------------------------------------------- |
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| 9 | |
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| 10 | (defpackage :json-exporter |
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| 11 | (:use :cl :json :datamodel :TM-SPARQL :base-tools :constants) |
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| 12 | (:export :export-construct-as-isidorus-json-string |
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| 13 | :get-all-topic-psis |
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| 14 | :to-json-string-summary |
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| 15 | :make-topic-summary |
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| 16 | :serialize-fragment)) |
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| 17 | |
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| 18 | (in-package :json-exporter) |
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| 19 | |
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| 20 | ;; the json schema for our datamodel is in ".../docs/xtm_json.txt" |
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| 21 | |
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| 22 | |
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| 23 | ;; ============================================================================= |
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| 24 | ;; --- main json data model ---------------------------------------------------- |
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| 25 | ;; ============================================================================= |
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| 26 | (defgeneric export-construct-as-isidorus-json-string (instance &key xtm-id revision) |
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| 27 | (:documentation "converts the Topic Map construct instance to a json string")) |
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| 28 | |
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| 29 | |
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| 30 | (defun identifiers-to-json-string (parent-construct &key (what 'd:psis) |
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| 31 | (revision *TM-REVISION*)) |
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| 32 | "returns the identifiers of a TopicMapConstructC as a json list" |
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| 33 | (declare (TopicMapConstructC parent-construct) |
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| 34 | (symbol what) |
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| 35 | (type (or integer null) revision)) |
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| 36 | (when (and parent-construct |
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| 37 | (or (eql what 'psis) |
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| 38 | (eql what 'item-identifiers) |
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| 39 | (eql what 'locators))) |
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| 40 | (let ((items |
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| 41 | (map 'list #'uri |
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| 42 | (funcall what parent-construct :revision revision)))) |
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| 43 | (json:encode-json-to-string items)))) |
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| 44 | |
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| 45 | |
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| 46 | (defun resourceX-to-json-string (value datatype &key (xtm-id d:*current-xtm*)) |
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| 47 | "returns a resourceRef and resourceData json object" |
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| 48 | (if (string= datatype "http://www.w3.org/2001/XMLSchema#anyURI") |
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| 49 | (concat "\"resourceRef\":" |
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| 50 | (let ((inner-value |
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| 51 | (let ((ref-topic |
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| 52 | (when (and (> (length value) 0) |
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| 53 | (eql (elt value 0) #\#)) |
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| 54 | (get-item-by-id (subseq value 1) :xtm-id xtm-id)))) |
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| 55 | (if ref-topic |
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| 56 | (concat "#" (topic-id ref-topic)) |
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| 57 | value)))) |
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| 58 | (json:encode-json-to-string inner-value)) |
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| 59 | ",\"resourceData\":null") |
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| 60 | (concat "\"resourceRef\":null," |
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| 61 | "\"resourceData\":{\"datatype\":" |
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| 62 | (json:encode-json-to-string datatype) |
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| 63 | ",\"value\":" |
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| 64 | (json:encode-json-to-string value) "}"))) |
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| 65 | |
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| 66 | |
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| 67 | (defun ref-topics-to-json-string (topics &key (revision *TM-REVISION*)) |
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| 68 | "returns a json string of all psi-uris of the passed topics as a list of lists" |
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| 69 | (declare (list topics) |
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| 70 | (type (or integer null) revision)) |
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| 71 | (if topics |
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| 72 | (let ((psis (json:encode-json-to-string |
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| 73 | (map 'list #'(lambda(topic) |
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| 74 | (declare (topicC topic)) |
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| 75 | (map 'list #'uri (psis topic :revision revision))) |
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| 76 | topics)))) |
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| 77 | (declare (list topics)) |
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| 78 | psis) |
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| 79 | "null")) |
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| 80 | |
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| 81 | |
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| 82 | (defun type-to-json-string (parent-elem &key (revision *TM-REVISION*)) |
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| 83 | "returns a json string of the type of the passed parent-elem" |
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| 84 | (declare (TypableC parent-elem) |
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| 85 | (type (or integer null) revision)) |
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| 86 | (concat "\"type\":" |
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| 87 | (if (instance-of parent-elem :revision revision) |
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| 88 | (json:encode-json-to-string |
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| 89 | (map 'list #'uri (psis (instance-of parent-elem :revision revision) |
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| 90 | :revision revision))) |
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| 91 | "null"))) |
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| 92 | |
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| 93 | |
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| 94 | (defmethod export-construct-as-isidorus-json-string |
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| 95 | ((instance VariantC) &key (xtm-id d:*current-xtm*) |
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| 96 | (revision *TM-REVISION*)) |
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| 97 | "transforms a VariantC object to a json string" |
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| 98 | (declare (type (or string null) xtm-id) |
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| 99 | (type (or integer null) revision)) |
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| 100 | (let ((itemIdentity |
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| 101 | (concat "\"itemIdentities\":" |
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| 102 | (identifiers-to-json-string instance :what 'item-identifiers |
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| 103 | :revision revision))) |
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| 104 | (scope |
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| 105 | (concat "\"scopes\":" |
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| 106 | (ref-topics-to-json-string |
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| 107 | (set-difference (themes instance :revision revision) |
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| 108 | (when-do name (parent instance :revision revision) |
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| 109 | (themes name :revision revision))) |
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| 110 | :revision revision))) |
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| 111 | (resourceX |
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| 112 | (let ((value |
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| 113 | (when (slot-boundp instance 'charvalue) |
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| 114 | (charvalue instance))) |
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| 115 | (type |
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| 116 | (when (slot-boundp instance 'datatype) |
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| 117 | (datatype instance)))) |
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| 118 | (resourceX-to-json-string value type :xtm-id xtm-id)))) |
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| 119 | (concat "{" itemIdentity "," scope "," resourceX "}"))) |
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| 120 | |
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| 121 | |
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| 122 | (defmethod export-construct-as-isidorus-json-string |
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| 123 | ((instance NameC) &key (xtm-id d:*current-xtm*) |
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| 124 | (revision *TM-REVISION*)) |
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| 125 | "transforms a NameC object to a json string" |
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| 126 | (declare (type (or string null) xtm-id) |
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| 127 | (type (or integer null) revision)) |
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| 128 | (let ((itemIdentity |
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| 129 | (concat "\"itemIdentities\":" |
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| 130 | (identifiers-to-json-string instance :what 'item-identifiers |
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| 131 | :revision revision))) |
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| 132 | (type |
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| 133 | (if (eql (instance-of instance :revision revision) |
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| 134 | (get-item-by-psi *topic-name-psi* :revision revision)) |
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| 135 | "\"type\":null" |
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| 136 | (type-to-json-string instance :revision revision))) |
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| 137 | (scope |
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| 138 | (concat "\"scopes\":" |
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| 139 | (ref-topics-to-json-string (themes instance :revision revision) |
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| 140 | :revision revision))) |
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| 141 | (value |
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| 142 | (concat "\"value\":" |
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| 143 | (if (slot-boundp instance 'charvalue) |
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| 144 | (json:encode-json-to-string (charvalue instance)) |
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| 145 | "null"))) |
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| 146 | (variant |
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| 147 | (if (variants instance :revision revision) |
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| 148 | (concat |
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| 149 | "\"variants\":" |
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| 150 | (let ((j-variants "[")) |
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| 151 | (loop for variant in (variants instance :revision revision) |
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| 152 | do (push-string |
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| 153 | (concat (export-construct-as-isidorus-json-string |
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| 154 | variant :xtm-id xtm-id :revision revision) |
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| 155 | ",") |
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| 156 | j-variants)) |
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| 157 | (concat (subseq j-variants 0 (- (length j-variants) 1)) "]"))) |
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| 158 | (concat "\"variants\":null")))) |
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| 159 | (concat "{" itemIdentity "," type "," scope "," value "," variant "}"))) |
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| 160 | |
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| 161 | |
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| 162 | (defmethod export-construct-as-isidorus-json-string |
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| 163 | ((instance OccurrenceC) &key (xtm-id d:*current-xtm*) |
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| 164 | (revision *TM-REVISION*)) |
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| 165 | "transforms an OccurrenceC object to a json string" |
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| 166 | (declare (type (or string null) xtm-id) |
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| 167 | (type (or integer null) revision)) |
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| 168 | (let ((itemIdentity |
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| 169 | (concat "\"itemIdentities\":" |
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| 170 | (identifiers-to-json-string instance :what 'item-identifiers |
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| 171 | :revision revision))) |
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| 172 | (type |
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| 173 | (type-to-json-string instance :revision revision)) |
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| 174 | (scope |
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| 175 | (concat "\"scopes\":" |
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| 176 | (ref-topics-to-json-string (themes instance :revision revision) |
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| 177 | :revision revision))) |
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| 178 | (resourceX |
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| 179 | (let ((value |
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| 180 | (when (slot-boundp instance 'charvalue) |
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| 181 | (charvalue instance))) |
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| 182 | (type |
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| 183 | (when (slot-boundp instance 'datatype) |
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| 184 | (datatype instance)))) |
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| 185 | (resourceX-to-json-string value type :xtm-id xtm-id)))) |
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| 186 | (concat "{" itemIdentity "," type "," scope "," resourceX "}"))) |
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| 187 | |
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| 188 | |
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| 189 | (defmethod export-construct-as-isidorus-json-string |
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| 190 | ((instance TopicC) &key (xtm-id d:*current-xtm*) |
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| 191 | (revision *TM-REVISION*)) |
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| 192 | "transforms an TopicC object to a json string" |
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| 193 | (declare (type (or string null) xtm-id) |
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| 194 | (type (or integer null) revision)) |
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| 195 | (let ((id |
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| 196 | (concat "\"id\":" |
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| 197 | (json:encode-json-to-string (topic-id instance revision)))) |
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| 198 | (itemIdentity |
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| 199 | (concat "\"itemIdentities\":" |
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| 200 | (identifiers-to-json-string instance :what 'item-identifiers |
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| 201 | :revision revision))) |
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| 202 | (subjectLocator |
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| 203 | (concat "\"subjectLocators\":" |
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| 204 | (identifiers-to-json-string instance :what 'locators |
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| 205 | :revision revision))) |
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| 206 | (subjectIdentifier |
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| 207 | (concat "\"subjectIdentifiers\":" |
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| 208 | (identifiers-to-json-string instance :what 'psis |
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| 209 | :revision revision))) |
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| 210 | (instanceOf |
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| 211 | (concat "\"instanceOfs\":" |
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| 212 | (ref-topics-to-json-string |
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| 213 | (list-instanceOf instance :revision revision) |
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| 214 | :revision revision))) |
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| 215 | (name |
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| 216 | (concat "\"names\":" |
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| 217 | (if (names instance :revision revision) |
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| 218 | (let ((j-names "[")) |
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| 219 | (loop for item in (names instance :revision revision) |
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| 220 | do (push-string |
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| 221 | (concat |
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| 222 | (export-construct-as-isidorus-json-string |
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| 223 | item :xtm-id xtm-id |
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| 224 | :revision revision) ",") |
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| 225 | j-names)) |
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| 226 | (concat (subseq j-names 0 (- (length j-names) 1)) "]")) |
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| 227 | "null"))) |
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| 228 | (occurrence |
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| 229 | (concat |
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| 230 | "\"occurrences\":" |
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| 231 | (if (occurrences instance :revision revision) |
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| 232 | (let ((j-occurrences "[")) |
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| 233 | (loop for item in (occurrences instance :revision revision) |
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| 234 | do (push-string |
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| 235 | (concat |
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| 236 | (export-construct-as-isidorus-json-string |
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| 237 | item :xtm-id xtm-id :revision revision) |
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| 238 | ",") |
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| 239 | j-occurrences)) |
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| 240 | (concat (subseq j-occurrences 0 (- (length j-occurrences) 1)) "]")) |
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| 241 | "null")))) |
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| 242 | (concat "{" id "," itemIdentity "," subjectLocator "," subjectIdentifier "," |
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| 243 | instanceOf "," name "," occurrence "}"))) |
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| 244 | |
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| 245 | |
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| 246 | (defun to-json-topicStub-string (topic &key (revision *TM-REVISION*)) |
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| 247 | "transforms the passed TopicC object to a topic stub |
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| 248 | string in the json format, which contains an id, |
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| 249 | all itemIdentities, all subjectLocators and all |
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| 250 | subjectIdentifiers" |
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| 251 | (declare (type (or TopicC null) topic) |
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| 252 | (type (or integer null) revision)) |
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| 253 | (when topic |
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| 254 | (let ((id |
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| 255 | (concat "\"id\":" |
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| 256 | (json:encode-json-to-string (topic-id topic revision)))) |
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| 257 | (itemIdentity |
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| 258 | (concat "\"itemIdentities\":" |
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| 259 | (identifiers-to-json-string topic :what 'item-identifiers |
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| 260 | :revision revision))) |
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| 261 | (subjectLocator |
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| 262 | (concat "\"subjectLocators\":" |
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| 263 | (identifiers-to-json-string topic :what 'locators :revision revision))) |
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| 264 | (subjectIdentifier |
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| 265 | (concat "\"subjectIdentifiers\":" |
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| 266 | (identifiers-to-json-string topic :what 'psis :revision revision)))) |
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| 267 | (concat "{" id "," itemIdentity "," subjectLocator "," subjectIdentifier "}")))) |
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| 268 | |
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| 269 | |
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| 270 | (defmethod export-construct-as-isidorus-json-string |
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| 271 | ((instance RoleC) &key (xtm-id d:*current-xtm*) |
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| 272 | (revision *TM-REVISION*)) |
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| 273 | "transforms an RoleC object to a json string" |
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| 274 | (declare (ignorable xtm-id) |
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| 275 | (type (or integer null) revision)) |
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| 276 | (let ((itemIdentity |
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| 277 | (concat "\"itemIdentities\":" |
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| 278 | (identifiers-to-json-string instance :what 'item-identifiers |
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| 279 | :revision revision))) |
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| 280 | (type |
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| 281 | (type-to-json-string instance :revision revision)) |
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| 282 | (topicRef |
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| 283 | (concat "\"topicRef\":" |
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| 284 | (if (player instance :revision revision) |
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| 285 | (json:encode-json-to-string |
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| 286 | (map 'list #'uri (psis (player instance :revision revision) |
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| 287 | :revision revision))) |
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| 288 | "null")))) |
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| 289 | (concat "{" itemIdentity "," type "," topicRef "}"))) |
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| 290 | |
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| 291 | |
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| 292 | (defmethod export-construct-as-isidorus-json-string |
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| 293 | ((instance AssociationC) &key (xtm-id d:*current-xtm*) |
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| 294 | (revision *TM-REVISION*)) |
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| 295 | "transforms an AssociationC object to a json string" |
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| 296 | (let ((itemIdentity |
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| 297 | (concat "\"itemIdentities\":" |
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| 298 | (identifiers-to-json-string instance :what 'item-identifiers |
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| 299 | :revision revision))) |
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| 300 | (type |
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| 301 | (type-to-json-string instance :revision revision)) |
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| 302 | (scope |
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| 303 | (concat "\"scopes\":" |
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| 304 | (ref-topics-to-json-string (themes instance :revision revision) |
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| 305 | :revision revision))) |
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| 306 | (role |
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| 307 | (concat "\"roles\":" |
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| 308 | (if (roles instance :revision revision) |
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| 309 | (let ((j-roles "[")) |
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| 310 | (loop for item in (roles instance :revision revision) |
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| 311 | do (push-string |
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| 312 | (concat |
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| 313 | (export-construct-as-isidorus-json-string |
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| 314 | item :xtm-id xtm-id |
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| 315 | :revision revision) ",") |
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| 316 | j-roles)) |
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| 317 | (concat (subseq j-roles 0 (- (length j-roles) 1)) "]")) |
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| 318 | "null")))) |
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| 319 | (concat "{" itemIdentity "," type "," scope "," role "}"))) |
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| 320 | |
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| 321 | |
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| 322 | (defmethod export-construct-as-isidorus-json-string |
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| 323 | ((instance TopicMapC) &key (xtm-id d:*current-xtm*) |
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| 324 | (revision *TM-REVISION*)) |
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| 325 | "returns the ItemIdentifier's uri" |
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| 326 | (declare (ignorable xtm-id) |
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| 327 | (type (or integer null) revision)) |
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| 328 | (let ((ii (item-identifiers instance :revision revision))) |
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| 329 | (when ii |
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| 330 | (uri (first ii))))) |
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| 331 | |
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| 332 | |
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| 333 | (defmethod export-construct-as-isidorus-json-string |
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| 334 | ((instance FragmentC) &key (xtm-id d:*current-xtm*) |
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| 335 | (revision *TM-REVISION*)) |
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| 336 | "transforms an FragmentC object to a json string, |
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| 337 | which contains the main topic, all depending topicStubs |
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| 338 | and all associations depending on the main topic" |
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| 339 | (declare (type (or string null) xtm-id) |
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| 340 | (type (or integer null) revision)) |
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| 341 | (let ((main-topic |
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| 342 | (concat "\"topic\":" |
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| 343 | (export-construct-as-isidorus-json-string |
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| 344 | (topic instance) :xtm-id xtm-id :revision revision))) |
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| 345 | (topicStubs |
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| 346 | (concat "\"topicStubs\":" |
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| 347 | (if (referenced-topics instance) |
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| 348 | (let ((j-topicStubs "[")) |
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| 349 | (loop for item in (referenced-topics instance) |
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| 350 | do (push-string |
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| 351 | (concat (to-json-topicStub-string item :revision revision) |
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| 352 | ",") |
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| 353 | j-topicStubs)) |
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| 354 | (concat (subseq j-topicStubs 0 (- (length j-topicStubs) 1)) "]")) |
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| 355 | "null"))) |
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| 356 | (associations |
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| 357 | (let ((filtered-assocs |
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| 358 | (remove-null |
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| 359 | (map 'list #'(lambda(assoc) |
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| 360 | (when (find-item-by-revision assoc revision) |
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| 361 | assoc)) |
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| 362 | (associations instance))))) |
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| 363 | (concat "\"associations\":" |
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| 364 | (if filtered-assocs |
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| 365 | (let ((j-associations "[")) |
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| 366 | (loop for item in filtered-assocs |
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| 367 | do (push-string |
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| 368 | (concat (export-construct-as-isidorus-json-string |
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| 369 | item :xtm-id xtm-id |
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| 370 | :revision revision) ",") |
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| 371 | j-associations)) |
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| 372 | (concat (subseq j-associations 0 |
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| 373 | (- (length j-associations) 1)) "]")) |
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| 374 | "null")))) |
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| 375 | (tm-ids |
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| 376 | (concat "\"tmIds\":" |
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| 377 | (let ((uris |
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| 378 | (loop for tm in (in-topicmaps (topic instance)) |
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| 379 | collect (when (item-identifiers tm) |
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| 380 | (uri (first (item-identifiers |
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| 381 | tm :revision revision))))))) |
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| 382 | (json:encode-json-to-string uris))))) |
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| 383 | (concat "{" main-topic "," topicStubs "," associations "," tm-ids "}"))) |
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| 384 | |
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| 385 | |
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| 386 | ;; ============================================================================= |
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| 387 | ;; --- json data summeries ----------------------------------------------------- |
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| 388 | ;; ============================================================================= |
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| 389 | (defun get-all-topic-psis(&key (revision *TM-REVISION*)) |
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| 390 | "returns all topic psis as a json list of the form |
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| 391 | [[topic-1-psi-1, topic-1-psi-2],[topic-2-psi-1, topic-2-psi-2],...]" |
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| 392 | (declare (type (or integer null) revision)) |
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| 393 | (let ((psi-lists |
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| 394 | (map 'list (lambda(top) |
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| 395 | (when (d:find-item-by-revision top revision) |
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| 396 | (let ((psis (d:psis top :revision revision))) |
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| 397 | (when psis |
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| 398 | (map 'list #'d:uri psis))))) |
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| 399 | (elephant:get-instances-by-class 'd:TopicC)))) |
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| 400 | (json:encode-json-to-string (tools:remove-null psi-lists)))) |
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| 401 | |
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| 402 | |
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| 403 | (defun to-json-string-summary (topic &key (revision *TM-REVISION*)) |
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| 404 | "creates a json string of called topic element. the following elements are within this |
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| 405 | summary: |
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| 406 | *topic id |
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| 407 | *all identifiers |
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| 408 | *names (only the real name value) |
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| 409 | *occurrences (jonly the resourceRef and resourceData elements)" |
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| 410 | (declare (TopicC topic) |
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| 411 | (type (or integer null) revision)) |
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| 412 | (let ((id |
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| 413 | (concat "\"id\":\"" (topic-id topic revision) "\"")) |
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| 414 | (itemIdentity |
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| 415 | (concat "\"itemIdentities\":" |
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| 416 | (identifiers-to-json-string topic :what 'item-identifiers |
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| 417 | :revision revision))) |
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| 418 | (subjectLocator |
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| 419 | (concat "\"subjectLocators\":" |
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| 420 | (identifiers-to-json-string topic :what 'locators :revision revision))) |
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| 421 | (subjectIdentifier |
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| 422 | (concat "\"subjectIdentifiers\":" |
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| 423 | (identifiers-to-json-string topic :what 'psis :revision revision))) |
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| 424 | (instanceOf |
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| 425 | (concat "\"instanceOfs\":" |
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| 426 | (ref-topics-to-json-string (list-instanceOf topic :revision revision) |
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| 427 | :revision revision))) |
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| 428 | (name |
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| 429 | (concat "\"names\":" |
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| 430 | (if (names topic :revision revision) |
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| 431 | (json:encode-json-to-string |
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| 432 | (loop for name in (names topic :revision revision) |
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| 433 | when (slot-boundp name 'charvalue) |
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| 434 | collect (charvalue name))) |
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| 435 | "null"))) |
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| 436 | (occurrence |
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| 437 | (concat "\"occurrences\":" |
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| 438 | (if (occurrences topic :revision revision) |
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| 439 | (json:encode-json-to-string |
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| 440 | (loop for occurrence in (occurrences topic :revision revision) |
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| 441 | when (slot-boundp occurrence 'charvalue) |
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| 442 | collect (charvalue occurrence))) |
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| 443 | "null")))) |
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| 444 | (concat "{" id "," itemIdentity "," subjectLocator "," subjectIdentifier |
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| 445 | "," instanceOf "," name "," occurrence "}"))) |
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| 446 | |
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| 447 | |
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| 448 | (defun make-topic-summary (topic-list &key (revision *TM-REVISION*)) |
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| 449 | "creates a json list of the produced json-strings by to-json-string-summary" |
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| 450 | (declare (list topic-list) |
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| 451 | (type (or integer null) revision)) |
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| 452 | (if topic-list |
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| 453 | (let ((json-string |
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| 454 | (let ((inner-string nil)) |
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| 455 | (loop for topic in topic-list |
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| 456 | do (push-string |
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| 457 | (concat (to-json-string-summary topic :revision revision) ",") |
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| 458 | inner-string)) |
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| 459 | (subseq inner-string 0 (- (length inner-string) 1))))) |
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| 460 | (concat "[" json-string "]")) |
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| 461 | "null")) |
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| 462 | |
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| 463 | |
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| 464 | ;; ============================================================================= |
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| 465 | ;; --- json data sparql-results ------------------------------------------------ |
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| 466 | ;; ============================================================================= |
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| 467 | |
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| 468 | (defmethod export-construct-as-isidorus-json-string |
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| 469 | ((construct SPARQL-Query) &key xtm-id revision) |
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| 470 | "Returns a JSON string that represents the object query result." |
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| 471 | (declare (Ignorable revision xtm-id)) |
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| 472 | (let ((query-result (result construct))) |
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| 473 | (if (not query-result) |
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| 474 | "null" |
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| 475 | (let ((j-str "{")) |
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| 476 | (loop for entry in query-result |
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| 477 | do (push-string |
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| 478 | (concat |
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| 479 | (json:encode-json-to-string (getf entry :variable)) ":" |
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| 480 | (json:encode-json-to-string (getf entry :result)) ",") |
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| 481 | j-str)) |
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| 482 | (concat (subseq j-str 0 (- (length j-str) 1)) "}"))))) |
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