/*
* Copyright 2001-2008 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.juddi.query;
import java.util.List;
import javax.persistence.EntityManager;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.juddi.query.util.DynamicQuery;
import org.apache.juddi.query.util.FindQualifiers;
import org.uddi.api_v3.DiscoveryURLs;
import org.uddi.api_v3.DiscoveryURL;
/**
*
* Returns the list of business keys possessing the DiscoveryUrls in the passed DiscoveryUrl list.
* Output is restricted by list of business keys passed in. If null, all businesses are searched.
* Output is produced by building the appropriate JPA query based on input and find qualifiers.
*
* From specification:
* "This is a list of discoveryURL structures to be matched against the discoveryURL data associated with registered businessEntity
* information. To search for URL without regard to useType attribute values, omit the useType attribute or pass it as an empty
* attribute. If useType values are included, the match occurs only on registered information that matches both the useType and
* URL value. The returned businessList contains businessInfo structures matching any of the URL's passed (logical OR)."
*
* @author <a href="mailto:jfaath@apache.org">Jeff Faath</a>
*/
public class FindBusinessByDiscoveryURLQuery extends BusinessEntityQuery {
@SuppressWarnings("unused")
private static Log log = LogFactory.getLog(FindBusinessByDiscoveryURLQuery.class);
private static final String ENTITY_NAME_CHILD = "DiscoveryUrl";
private static final String entityAliasChild;;
static {
entityAliasChild = buildAlias(ENTITY_NAME_CHILD); }
public static List<Object> select(EntityManager em, FindQualifiers fq, DiscoveryURLs discURLs,
List<Object> keysIn, DynamicQuery.Parameter... restrictions) {
// If keysIn is not null and empty, then search is over.
if ((keysIn != null) && (keysIn.size() == 0)) return keysIn; if (discURLs == null) return keysIn; List<DiscoveryURL> discURLlist = discURLs.getDiscoveryURL(); if (discURLlist == null || discURLlist.size() == 0) return keysIn; DynamicQuery dynamicQry = new DynamicQuery(selectSQL); appendConditions(dynamicQry, fq, discURLlist); if (restrictions != null && restrictions.length > 0) dynamicQry.AND().pad().appendGroupedAnd(restrictions); return getQueryResult(em, dynamicQry, keysIn, ENTITY_ALIAS + "." + KEY_NAME);
}
/*
* Appends the conditions to the query based on the discovery url list. By default, the urls are OR'd and this cannot be changed.
*
*/
public static void appendConditions(DynamicQuery qry, FindQualifiers fq, List<DiscoveryURL> discURLs) {
// Append the necessary tables (one will always be added connecting the entity to its discovery url table).
appendJoinTables(qry, fq, discURLs); qry.AND().pad().openParen().pad(); int count = 0; for(DiscoveryURL discURL : discURLs) { String urlTerm = entityAliasChild + ".url"; String urlValue = discURL.getValue(); if (discURL.getUseType() == null || discURL.getUseType().length() == 0 ) { qry.appendGroupedAnd(new DynamicQuery.Parameter(urlTerm, urlValue, DynamicQuery.PREDICATE_LIKE));
}
else {
qry.appendGroupedAnd(new DynamicQuery.Parameter(urlTerm, urlValue, DynamicQuery.PREDICATE_LIKE), new DynamicQuery.Parameter(entityAliasChild + ".useType", discURL.getUseType(), DynamicQuery.PREDICATE_EQUALS));
}
if (count + 1 < discURLs.size()) qry.OR().pad(); count++; } qry.closeParen().pad(); }
/*
* Appends the necessary join table for the child entity
*/
public static void appendJoinTables(DynamicQuery qry, FindQualifiers fq, List<DiscoveryURL> discURLs) {
qry.comma().pad().append(ENTITY_NAME_CHILD + " " + entityAliasChild).pad(); qry.WHERE().pad().openParen().pad(); qry.append(ENTITY_ALIAS + "." + KEY_NAME + " = " + entityAliasChild + "." + ENTITY_FIELD + "." + KEY_NAME + " "); qry.closeParen().pad(); }
}