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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2014 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | namespace oat\taoQtiItem\model\qti\metadata\imsManifest; |
| 23 | |
| 24 | use oat\taoQtiItem\model\qti\metadata\simple\SimpleMetadataValue; |
| 25 | |
| 26 | /** |
| 27 | * This implementation of MetadataValue represents MetadataValue objects in an IMS Manifest context. |
| 28 | * |
| 29 | * To illustrate what an instance of a ImsManifestMetadataValue represents, have a look at the IMS Manifest located |
| 30 | * at 'http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml'. This manifest describes a single |
| 31 | * QTI Item with metadata. |
| 32 | * |
| 33 | * As an example, the identifier metadata value 'qti_v2_item_01' can by represented by an implementation |
| 34 | * of the MetadataValue interface returning the following information. Please note that the terms |
| 35 | * "Path", "Resource Identifier", "Resource Type" and "Resource Hypertext Reference" in the example below are |
| 36 | * described in depth in the comments about the methods of this interface. |
| 37 | * |
| 38 | * * A "Path" of 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom' -> 'http://www.imsglobal.org/xsd/imsmd_v1p2#general' |
| 39 | * -> 'http://www.imsglobal.org/xsd/imsmd_v1p2#identifier' |
| 40 | * * No particular "Language' |
| 41 | * * 'choice' as its "Resource Identifier" |
| 42 | * * 'imsqti_item_xmlv2p0' as its "Resource Type" |
| 43 | * * 'choice.xml' as its "Resource Hypertext Reference" |
| 44 | * |
| 45 | * Please see the description of the methods composing this interface for more information. |
| 46 | * |
| 47 | * @author Antoine Robin <antoine.robin@vesperiagroup.com> |
| 48 | * @author Jérôme Bogaerts <jerome@taotesting.com> |
| 49 | */ |
| 50 | class ImsManifestMetadataValue extends SimpleMetadataValue |
| 51 | { |
| 52 | private $resourceType; |
| 53 | private $resourceHref; |
| 54 | |
| 55 | /** |
| 56 | * Create a new ImsManifestMetadataValue object. |
| 57 | * |
| 58 | */ |
| 59 | public function __construct($resourceIdentifier, $resourceType, $resourceHref, $path, $value, $language = '') |
| 60 | { |
| 61 | parent::__construct($resourceIdentifier, $path, $value, $language); |
| 62 | $this->setResourceType($resourceType); |
| 63 | $this->setResourceHref($resourceHref); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Returns an array of strings representing the path to a Metadata Value within |
| 68 | * an IMS Manifest file. |
| 69 | * |
| 70 | * As an example, the following array represents the path to the "imsmd:lom->general->identifier" metadata |
| 71 | * value 'qti_v2_item_01' in the IMS Manifest example located at |
| 72 | * http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml. |
| 73 | * |
| 74 | * <code> |
| 75 | * array( |
| 76 | * 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom', |
| 77 | * 'http://www.imsglobal.org/xsd/imsmd_v1p2#general', |
| 78 | * 'http://www.imsglobal.org/xsd/imsmd_v1p2#identifier' |
| 79 | * ) |
| 80 | * </code> |
| 81 | * |
| 82 | * |
| 83 | * Each entry of the array is a "Path Component" e.g. http://www.imsglobal.org/xsd/imsmd_v1p2#lom in the example |
| 84 | * above. A Path Component is composed of 2 values separated by a # (sharp) character. |
| 85 | * |
| 86 | * * The first value is called the "Base". It is the namespace URI of the related XML tag withing the IMS Manifest |
| 87 | * file. |
| 88 | * * The second value is called the "Segment". It is the intrinsic XML tag name. |
| 89 | * |
| 90 | * In the IMS Manifest example located at |
| 91 | * http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml, the Path Component |
| 92 | * 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom' correspond to the <imsmd:lom> tag where 'imsmd' prefix resolves |
| 93 | * the 'http://www.imsglobal.org/xsd/imsmd_v1p2' namespace. |
| 94 | * |
| 95 | * |
| 96 | * @return array An array of strings representing the descriptive path to the metadata attribute. |
| 97 | * @see http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml IMS Manifest example. |
| 98 | */ |
| 99 | public function getPath() |
| 100 | { |
| 101 | return parent::getPath(); |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Get the language, if specified, of the Metadata value. In the IMS Manifest example located at |
| 106 | * http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml, the metadata value with |
| 107 | * the given path |
| 108 | * |
| 109 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom' |
| 110 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#general' |
| 111 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#description' |
| 112 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#langstring' |
| 113 | * |
| 114 | * with an intrinsic value of 'This is a dummy item', has language 'en' (English), because of the use of the |
| 115 | * existence of the xml:lang attribute. The fact that this attribute is set to the node makes the metadata value |
| 116 | * to have a language. |
| 117 | * |
| 118 | * If a metadata value has no xml:lang defined, this method returns '' (empty string). |
| 119 | * |
| 120 | * @return string The language of this metadata value or an empty string. |
| 121 | * @see http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml IMS Manifest example. |
| 122 | */ |
| 123 | public function getLanguage() |
| 124 | { |
| 125 | return parent::getLanguage(); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Obtain the identifier of the <resource> this metadata value belongs to. As an example from |
| 130 | * the IMS Manifest file located at http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml, |
| 131 | * the metadata value with the given path |
| 132 | * |
| 133 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom' |
| 134 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#general' |
| 135 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#identifier' |
| 136 | * |
| 137 | * belongs to resource with identifier 'choice', because its value is contained within the <resource> |
| 138 | * node with identifer 'choice'. |
| 139 | * |
| 140 | * @return string A resource identifier. |
| 141 | * @see http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml IMS Manifest example. |
| 142 | */ |
| 143 | public function getResourceIdentifier() |
| 144 | { |
| 145 | return parent::getResourceIdentifier(); |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Obtain the type of the <resource> this metadata value belongs to. As an example from |
| 150 | * the IMS Manifest file located at http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml, |
| 151 | * the metadata value with the given path |
| 152 | * |
| 153 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom' |
| 154 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#general' |
| 155 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#identifier' |
| 156 | * |
| 157 | * belongs to a resource with type 'imsqti_item_xmlv2p0', because its value is contained within a <resource> |
| 158 | * node with a type attribute that has a value of 'imsqti_item_xmlv2p0'. |
| 159 | * |
| 160 | * @return string A resource type. |
| 161 | * @see http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml IMS Manifest example. |
| 162 | */ |
| 163 | public function getResourceType() |
| 164 | { |
| 165 | return $this->resourceType; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Obtain the hypertext reference of the <resource> this metadata value belongs to. As an example from |
| 170 | * the IMS Manifest file located at http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml, |
| 171 | * the metadata value with the given path |
| 172 | * |
| 173 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom' |
| 174 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#general' |
| 175 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#identifier' |
| 176 | * |
| 177 | * belongs to a resource with href 'choice.xml', because its value is contained within a <resource> |
| 178 | * node with a href attribute that has a value of 'choice.xml'. |
| 179 | * |
| 180 | * @return string An hypertext reference. |
| 181 | * @see http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml IMS Manifest example. |
| 182 | */ |
| 183 | public function getResourceHref() |
| 184 | { |
| 185 | return $this->resourceHref; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Obtain the intrinsic value of the metadata. As an example from |
| 190 | * the IMS Manifest file located at http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml, |
| 191 | * the metadata value with the given path |
| 192 | * |
| 193 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#lom' |
| 194 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#general' |
| 195 | * * 'http://www.imsglobal.org/xsd/imsmd_v1p2#identifier' |
| 196 | * |
| 197 | * is 'qti_v2_item_01'. |
| 198 | * |
| 199 | * If there is no actual value for this metadata (the node is empty), an empty string is returned. |
| 200 | * |
| 201 | * @return string A string |
| 202 | * @see http://www.imsglobal.org/question/qti_v2p0/examples/mdexample/imsmanifest.xml IMS Manifest example. |
| 203 | */ |
| 204 | public function getValue() |
| 205 | { |
| 206 | return parent::getValue(); |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * @param string $resourceHref |
| 211 | */ |
| 212 | public function setResourceHref($resourceHref) |
| 213 | { |
| 214 | $this->resourceHref = $resourceHref; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * @param string $resourceType |
| 219 | */ |
| 220 | public function setResourceType($resourceType) |
| 221 | { |
| 222 | $this->resourceType = $resourceType; |
| 223 | } |
| 224 | } |