/*
* 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.openjpa.persistence.query;
class UnaryOperatorExpression extends ExpressionImpl implements Aggregate {
protected final Expression _e;
protected final UnaryFunctionalOperator _op;
public UnaryOperatorExpression(Expression e, UnaryFunctionalOperator op) {
_e = e;
_op = op;
}
public Expression getOperand() {
return _e;
}
public UnaryFunctionalOperator getOperator() {
return _op;
}
public Expression distinct() {
return new DistinctExpression(this);
}
public String asExpression(AliasContext ctx) {
return _op + "(" + ((Visitable)_e).asExpression(ctx) + ")";
}
public String asProjection(AliasContext ctx) {
return _op + "(" + ((Visitable)_e).asProjection(ctx) + ")" +
(ctx.hasAlias(this) ? " " + ctx.getAlias(this) : "");
}
}