/*
* Copyright (c) 2011. The Apache Software Foundation
*
* 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.yaoql.impl;
import org.apache.expreval.expr.ExpressionTree;
import org.apache.hadoop.hbase.hbql.client.HBqlException;
import org.apache.hadoop.hbase.hbql.util.Maps;
import java.util.Map;
public abstract class ParameterBinding {
final Map<String, Object> parameterMap = Maps.newHashMap();
public abstract String getQuery();
public void setParameter(final String name, final Object val) {
this.getParameterMap().put(name, val);
}
protected void applyParameters(final ExpressionTree expressionTree) throws HBqlException {
for (final String key : this.getParameterMap().keySet()) {
int cnt = expressionTree.setParameter(key, this.getParameterMap().get(key));
if (cnt == 0)
throw new HBqlException("Parameter name " + key + " does not exist in " + this.getQuery());
}
}
private Map<String, Object> getParameterMap() {
return parameterMap;
}
}