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 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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
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package org.apache.cayenne.query;

import org.apache.cayenne.ObjectContext;
import org.apache.cayenne.QueryResponse;
import org.apache.cayenne.QueryResult;
import org.apache.cayenne.util.QueryResultBuilder;

import java.util.List;
import java.util.Map;

/**
 * A query that represents a named parameterized non selecting query stored in the mapping. The
 * actual query is resolved during execution.
 *
 * @since 4.0
 */
public class MappedExec extends AbstractMappedQuery {

    public static MappedExec query(String queryName) {
        return new MappedExec(queryName);
    }

    protected MappedExec(String queryName) {
        super(queryName);
    }

    @Override
    public MappedExec params(Map<String, ?> parameters) {
        return (MappedExec) super.params(parameters);
    }

    @Override
    public MappedExec param(String name, Object value) {
        return (MappedExec) super.param(name, value);
    }


    public QueryResult execute(ObjectContext context) {
        // TODO: switch ObjectContext to QueryResult instead of QueryResponse
        // and create its own 'exec' method
        QueryResponse response = context.performGenericQuery(this);

        QueryResultBuilder builder = QueryResultBuilder.builder(response.size());
        for (response.reset(); response.next(); ) {

            if (response.isList()) {
                builder.addSelectResult(response.currentList());
            } else {
                builder.addBatchUpdateResult(response.currentUpdateCount());
            }
        }

        return builder.build();
    }

    public int[] update(ObjectContext context) {
        return context.performGenericQuery(this).firstUpdateCount();
    }
}