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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
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
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package org.apache.cayenne.exp.parser;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import org.apache.cayenne.exp.Expression;
/**
* Bitwise left shift '<<' operation.
*
* @since 4.0
*/
public class ASTBitwiseLeftShift extends EvaluatedBitwiseNode {
private static final long serialVersionUID = -954784931828996446L;
ASTBitwiseLeftShift(int id) {
super(id);
}
public ASTBitwiseLeftShift() {
super(ExpressionParserTreeConstants.JJTBITWISELEFTSHIFT);
}
public ASTBitwiseLeftShift(Object[] nodes) {
this(Arrays.asList(nodes));
}
public ASTBitwiseLeftShift(Collection<Object> nodes) {
super(ExpressionParserTreeConstants.JJTBITWISELEFTSHIFT);
int len = nodes.size();
Iterator<Object> it = nodes.iterator();
for (int i = 0; i < len; i++) {
jjtAddChild(wrapChild(it.next()), i);
}
connectChildren();
}
@Override
protected long op(long result, long arg) {
return result << arg;
}
@Override
protected String getExpressionOperator(int index) {
return "<<";
}
@Override
public int getType() {
return Expression.BITWISE_LEFT_SHIFT;
}
@Override
protected String getEJBQLExpressionOperator(int index) {
throw new UnsupportedOperationException("EJBQL 'bitwise not' is not supported");
}
@Override
public Expression shallowCopy() {
return new ASTBitwiseLeftShift(id);
}
@Override
public void jjtClose() {
super.jjtClose();
flattenTree();
}
}