/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.sql.tree;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import java.util.List;
public class SimpleCaseExpression
extends Expression {
private final Expression operand;
private final List<WhenClause> whenClauses;
private final Expression defaultValue;
public SimpleCaseExpression(Expression operand, List<WhenClause> whenClauses, Expression defaultValue) {
Preconditions.checkNotNull(operand, "operand is null");
Preconditions.checkNotNull(whenClauses, "whenClauses is null");
this.operand = operand;
this.whenClauses = ImmutableList.copyOf(whenClauses);
this.defaultValue = defaultValue;
}
public Expression getOperand() {
return operand;
}
public List<WhenClause> getWhenClauses() {
return whenClauses;
}
public Expression getDefaultValue() {
return defaultValue;
}
@Override
public <R, C> R accept(AstVisitor<R, C> visitor, C context) {
return visitor.visitSimpleCaseExpression(this, context);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
SimpleCaseExpression that = (SimpleCaseExpression) o;
if (defaultValue != null ? !defaultValue.equals(that.defaultValue) : that.defaultValue != null) {
return false;
}
if (!operand.equals(that.operand)) {
return false;
}
if (!whenClauses.equals(that.whenClauses)) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = operand.hashCode();
result = 31 * result + whenClauses.hashCode();
result = 31 * result + (defaultValue != null ? defaultValue.hashCode() : 0);
return result;
}
}