/*****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.cayenne.query;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.cayenne.map.DataMap;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.ObjEntity;
import org.apache.cayenne.map.Procedure;
import org.apache.cayenne.reflect.ClassDescriptor;
/**
* A QueryMetadata implementation that returns all the defaults.
*
* @since 1.2
*/
class DefaultQueryMetadata implements QueryMetadata {
static final QueryMetadata defaultMetadata = new DefaultQueryMetadata();
/**
* To simplify overriding this implementation checks whether there is a non-null
* entity or procedure, and uses its DataMap.
*/
public DataMap getDataMap() {
if (getObjEntity() != null) {
return getObjEntity().getDataMap();
}
if (getDbEntity() != null) {
return getDbEntity().getDataMap();
}
if (getProcedure() != null) {
return getProcedure().getDataMap();
}
return null;
}
/**
* @since 3.0
*/
public List<Object> getResultSetMapping() {
return null;
}
/**
* @since 4.0
*/
@Override
public boolean isSingleResultSetMapping() {
return false;
}
/**
* @since 3.0
* @deprecated use {@link DefaultQueryMetadata#getOriginatingQuery()}
*/
@Deprecated
public Query getOrginatingQuery() {
return null;
}
/**
* @since 4.0
*/
public Query getOriginatingQuery() {
return null;
}
/**
* @since 3.0
*/
public QueryCacheStrategy getCacheStrategy() {
return QueryCacheStrategy.getDefaultStrategy();
}
public DbEntity getDbEntity() {
return null;
}
public ObjEntity getObjEntity() {
return null;
}
public ClassDescriptor getClassDescriptor() {
return null;
}
public Procedure getProcedure() {
return null;
}
public String getCacheKey() {
return null;
}
/**
* @deprecated since 4.0, use {@link DefaultQueryMetadata#getCacheGroup()}
*/
@Deprecated
public String[] getCacheGroups() {
return null;
}
/**
* @since 4.0
*/
@Override
public String getCacheGroup() {
return null;
}
public boolean isFetchingDataRows() {
return QueryMetadata.FETCHING_DATA_ROWS_DEFAULT;
}
public boolean isRefreshingObjects() {
return true;
}
public int getPageSize() {
return QueryMetadata.PAGE_SIZE_DEFAULT;
}
public int getFetchOffset() {
return -1;
}
public int getFetchLimit() {
return QueryMetadata.FETCH_LIMIT_DEFAULT;
}
public PrefetchTreeNode getPrefetchTree() {
return null;
}
public Map<String, String> getPathSplitAliases() {
return Collections.emptyMap();
}
public int getStatementFetchSize() {
return QueryMetadata.STATEMENT_FETCH_SIZE_DEFAULT;
}
/**
* @since 4.0
*/
@Override
public boolean isSuppressingDistinct() {
return false;
}
}