| /* |
| * 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.phoenix.expression; |
| |
| import java.math.BigDecimal; |
| import java.util.List; |
| |
| import org.apache.phoenix.expression.visitor.ExpressionVisitor; |
| import org.apache.phoenix.query.QueryConstants; |
| |
| |
| /** |
| * |
| * Subtract expression implementation |
| * |
| * |
| * @since 0.1 |
| */ |
| public abstract class SubtractExpression extends BaseAddSubtractExpression { |
| protected static final BigDecimal BD_MILLIS_IN_DAY = BigDecimal.valueOf(QueryConstants.MILLIS_IN_DAY); |
| |
| public SubtractExpression() { |
| } |
| |
| public SubtractExpression(List<Expression> children) { |
| super(children); |
| } |
| |
| @Override |
| public final <T> T accept(ExpressionVisitor<T> visitor) { |
| List<T> l = acceptChildren(visitor, visitor.visitEnter(this)); |
| T t = visitor.visitLeave(this, l); |
| if (t == null) { |
| t = visitor.defaultReturn(this, l); |
| } |
| return t; |
| } |
| |
| @Override |
| public String getOperatorString() { |
| return " - "; |
| } |
| } |