com.amazonaws.services.dynamodbv2.xspec.ParenthesizedCondition Maven / Gradle / Ivy
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/*
* Copyright 2015-2016 Amazon Technologies, Inc.
*
* Licensed 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://aws.amazon.com/apache2.0
*
* This file 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 com.amazonaws.services.dynamodbv2.xspec;
import com.amazonaws.annotation.Beta;
/**
* An explicitly parenthesized condition, ie '(' condition ')', used in building
* condition expressions.
*
* This object is as immutable (or unmodifiable) as the underlying condition.
*/
@Beta
public final class ParenthesizedCondition extends Condition {
private final Condition condition;
/**
* Returns a parenthesized condition for the given condition if the given
* condition is not already a parenthesized condition; or the original
* condition otherwise.
*/
public static ParenthesizedCondition getInstance(Condition condition) {
return condition instanceof ParenthesizedCondition ? (ParenthesizedCondition) condition
: new ParenthesizedCondition(condition);
}
private ParenthesizedCondition(Condition condition) {
this.condition = condition;
}
@Override
String asSubstituted(SubstitutionContext context) {
return "(" + condition.asSubstituted(context) + ")";
}
@Override
boolean atomic() {
return true;
}
@Override
int precedence() {
return Precedence.Parentheses.value();
}
}