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Calcite APIs for LINQ (Language-Integrated Query) in Java
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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
*
* 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.calcite.linq4j.tree;
import java.lang.reflect.Type;
import java.util.Objects;
/**
* Represents an expression that has a ternary operator.
*/
public class TernaryExpression extends Expression {
public final Expression expression0;
public final Expression expression1;
public final Expression expression2;
TernaryExpression(ExpressionType nodeType, Type type, Expression expression0,
Expression expression1, Expression expression2) {
super(nodeType, type);
assert expression0 != null : "expression0 should not be null";
assert expression1 != null : "expression1 should not be null";
assert expression2 != null : "expression2 should not be null";
this.expression0 = expression0;
this.expression1 = expression1;
this.expression2 = expression2;
}
@Override public Expression accept(Shuttle shuttle) {
shuttle = shuttle.preVisit(this);
Expression expression0 = this.expression0.accept(shuttle);
Expression expression1 = this.expression1.accept(shuttle);
Expression expression2 = this.expression2.accept(shuttle);
return shuttle.visit(this, expression0, expression1, expression2);
}
public R accept(Visitor visitor) {
return visitor.visit(this);
}
void accept(ExpressionWriter writer, int lprec, int rprec) {
if (writer.requireParentheses(this, lprec, rprec)) {
return;
}
expression0.accept(writer, lprec, nodeType.lprec);
writer.append(nodeType.op);
expression1.accept(writer, nodeType.rprec, nodeType.lprec);
writer.append(nodeType.op2);
expression2.accept(writer, nodeType.rprec, rprec);
}
@Override public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
if (!super.equals(o)) {
return false;
}
TernaryExpression that = (TernaryExpression) o;
if (!expression0.equals(that.expression0)) {
return false;
}
if (!expression1.equals(that.expression1)) {
return false;
}
if (!expression2.equals(that.expression2)) {
return false;
}
return true;
}
@Override public int hashCode() {
return Objects.hash(nodeType, type, expression0, expression1, expression2);
}
}
// End TernaryExpression.java