org.apache.openjpa.kernel.exps.Resolver Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.kernel.exps;
import org.apache.openjpa.conf.OpenJPAConfiguration;
import org.apache.openjpa.kernel.QueryContext;
/**
* A Resolver is used to resolve listeners and class or entity names
* that appear in a query.
*
* @author Abe White
*/
public interface Resolver {
/**
* Resolve the type represented by the given class name. This will
* test the type against the namespace of the Query and the declared
* imports, and will properly handle primitives and java.lang types
* as well. Returns null if the name does not match a known type.
*/
public Class classForName(String name, String[] imports);
/**
* Return the filter listener for the given tag, or null if none.
*/
public FilterListener getFilterListener(String tag);
/**
* Return the function listener for the given tag, or null if none.
*/
public AggregateListener getAggregateListener(String tag);
/**
* Return the OpenJPA configuration.
*/
public OpenJPAConfiguration getConfiguration ();
/**
* The {@link QueryContext} for which this resolver was created
*
* @since 1.1.0
*/
public QueryContext getQueryContext();
}