metadatautil.inc.php
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<?php
/**
* $Id$
*
* Utility functions for retrieving information from and managing
* fieldsets with conditions.
*
* Copyright (c) 2005 Jam Warehouse http://www.jamwarehouse.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @version $Revision$
* @author Neil Blakey-Milner, Jam Warehouse (Pty) Ltd, South Africa
*/
require_once(KT_LIB_DIR . "/ktentity.inc");
require_once(KT_LIB_DIR . '/documentmanagement/MetaData.inc');
require_once(KT_LIB_DIR . '/metadata/valueinstance.inc.php');
require_once(KT_LIB_DIR . '/metadata/fieldset.inc.php');
require_once(KT_LIB_DIR . '/metadata/fieldbehaviour.inc.php');
class KTMetadataUtil {
// {{{ getNext
/**
* Given a set of selected values (aCurrentSelections) for a given
* field set (iFieldSet), returns an array (possibly empty) with the
* keys set to newly uncovered fields, and the contents an array of
* the value instances that are available to choose in those fields.
*/
function getNext($oFieldset, $aCurrentSelections) {
$oFieldset =& KTUtil::getObject('KTFieldset', $oFieldset);
if (empty($aCurrentSelections)) {
$oField =& DocumentField::get($oFieldset->getMasterFieldId());
return array($oField->getId() => array('field' => $oField, 'values' => $oField->getValues()));
}
$aReturn = array();
foreach ($aCurrentSelections as $iFieldId => $iLookupId) {
$aFieldIds = KTMetadataUtil::getNextValuesForLookup($iLookupId);
foreach ($aFieldIds as $key => $aValueIds) {
if (in_array($key, $aCurrentSelections)) {
continue;
}
$aValues = array();
foreach ($aValueIds as $iLookupId) {
$aValues[] = MetaData::get($iLookupId);
}
$aReturn[$key] = array(
'field' => DocumentField::get($key),
'values' => $aValues,
);
}
}
return $aReturn;
}
// }}}
// {{{ getStartFields
function getMasterField($oFieldset) {
$oFieldset =& KTUtil::getObject('KTFieldset', $oFieldset);
if ($oFieldset->getMasterField()) {
return DocumentField::get($oFieldset->getMasterField());
}
}
// }}}
// {{{ removeSetsFromDocumentType
function removeSetsFromDocumentType($oDocumentType, $aFieldsets) {
if (is_object($oDocumentType)) {
$iDocumentTypeId = $oDocumentType->getId();
} else {
$iDocumentTypeId = $oDocumentType;
}
if (!is_array($aFieldsets)) {
$aFieldsets = array($aFieldsets);
}
if (empty($aFieldsets)) {
return true;
}
$aIds = array();
foreach ($aFieldsets as $oFieldset) {
if (is_object($oFieldset)) {
$iFieldsetId = $oFieldset->getId();
} else {
$iFieldsetId = $oFieldset;
}
$aIds[] = $iFieldsetId;
}
// Converts to (?, ?, ?) for query
$sParam = DBUtil::paramArray($aIds);
$aWhere = KTUtil::whereToString(array(
array('document_type_id = ?', array($iDocumentTypeId)),
array("fieldset_id IN ($sParam)", $aIds),
));
$sTable = KTUtil::getTableName('document_type_fieldsets');
$aQuery = array(
"DELETE FROM $sTable WHERE {$aWhere[0]}",
$aWhere[1],
);
return DBUtil::runQuery($aQuery);
}
// }}}
// {{{ addSetsToDocumentType
function addSetsToDocumentType($oDocumentType, $aFieldsets) {
if (is_object($oDocumentType)) {
$iDocumentTypeId = $oDocumentType->getId();
} else {
$iDocumentTypeId = $oDocumentType;
}
if (!is_array($aFieldsets)) {
$aFieldsets = array($aFieldsets);
}
$aIds = array();
foreach ($aFieldsets as $oFieldset) {
if (is_object($oFieldset)) {
$iFieldsetId = $oFieldset->getId();
} else {
$iFieldsetId = $oFieldset;
}
$aIds[] = $iFieldsetId;
}
$sTable = KTUtil::getTableName('document_type_fieldsets');
foreach ($aIds as $iId) {
$res = DBUtil::autoInsert($sTable, array(
'document_type_id' => $iDocumentTypeId,
'fieldset_id' => $iId,
));
if (PEAR::isError($res)) {
return $res;
}
}
return true;
}
// }}}
// {{{ addFieldOrder
function addFieldOrder($oParentField, $oChildField, $oFieldset) {
$iParentFieldId = KTUtil::getId($oParentField);
$iChildFieldId = KTUtil::getId($oChildField);
$iFieldsetId = KTUtil::getId($oFieldset);
$aOptions = array('noid' => true);
$sTable = KTUtil::getTableName('field_orders');
$aValues = array(
'parent_field_id' => $iParentFieldId,
'child_field_id' => $iChildFieldId,
'fieldset_id' => $iFieldsetId,
);
return DBUtil::autoInsert($sTable, $aValues, $aOptions);
}
// }}}
// {{{ removeFieldOrdering
function removeFieldOrdering($oFieldset) {
$iFieldsetId = KTUtil::getId($oFieldset);
$sTable = KTUtil::getTableName('field_orders');
$aQuery = array(
"DELETE FROM $sTable WHERE fieldset_id = ?",
array($iFieldsetId),
);
return DBUtil::runQuery($aQuery);
}
// }}}
// {{{ getParentFieldId
function getParentFieldId($oField) {
$sTable = KTUtil::getTableName('field_orders');
$aQuery = array("SELECT parent_field_id FROM $sTable WHERE child_field_id = ?",
array($oField->getId()),
);
return DBUtil::getOneResultKey($aQuery, 'parent_field_id');
}
// }}}
// {{{ getChildFieldIds
function getChildFieldIds($oField) {
$iFieldId = KTUtil::getId($oField);
$sTable = KTUtil::getTableName('field_orders');
$aQuery = array("SELECT child_field_id FROM $sTable WHERE parent_field_id = ?",
array($iFieldId),
);
return DBUtil::getResultArrayKey($aQuery, 'child_field_id');
}
// }}}
function &getOrCreateValueInstanceForLookup(&$oLookup) {
$oLookup =& KTUtil::getObject('MetaData', $oLookup);
$oValueInstance =& KTValueInstance::getByLookupSingle($oLookup);
if (PEAR::isError($oValueInstance)) {
return $oValueInstance;
}
// If we got a value instance, return it.
if (!is_null($oValueInstance)) {
return $oValueInstance;
}
return KTValueInstance::createFromArray(array(
'fieldid' => $oLookup->getDocFieldId(),
'fieldvalueid' => $oLookup->getId(),
));
}
function getNextValuesForLookup($oLookup) {
$oLookup =& KTUtil::getObject('MetaData', $oLookup);
$oInstance =& KTValueInstance::getByLookupSingle($oLookup);
if (PEAR::isError($oInstance)) {
return $oInstance;
}
if (!is_null($oInstance) && $oInstance->getBehaviourId()) {
// if we have an instance, and we have a behaviour, return
// the actual values for that behaviour.
$oBehaviour =& KTFieldBehaviour::get($oInstance->getBehaviourId());
return KTMetadataUtil::getNextValuesForBehaviour($oBehaviour);
}
// No instance or no behaviour, so send an empty array for each
// field that we affect.
$aChildFieldIds = KTMetadataUtil::getChildFieldIds($oLookup->getDocFieldId());
foreach ($aChildFieldIds as $iFieldId) {
$aValues[$iFieldId] = array();
}
return $aValues;
}
function getNextValuesForBehaviour($oBehaviour) {
$oBehaviour =& KTUtil::getObject('KTFieldBehaviour', $oBehaviour);
$aValues = array();
$sTable = KTUtil::getTableName('field_behaviour_options');
$aChildFieldIds = KTMetadataUtil::getChildFieldIds($oBehaviour->getFieldId());
foreach ($aChildFieldIds as $iFieldId) {
$aValues[$iFieldId] = array();
}
$aQuery = array(
"SELECT field_id, instance_id FROM $sTable WHERE behaviour_id = ?",
array($oBehaviour->getId()),
);
$aRows = DBUtil::getResultArray($aQuery);
if (PEAR::isError($aRows)) {
return $aRows;
}
foreach ($aRows as $aRow) {
$oInstance =& KTValueInstance::get($aRow['instance_id']);
$aValues[$aRow['field_id']][] = $oInstance->getFieldValueId();
}
return $aValues;
}
}
?>