com.hazelcast.org.jsfr.json.filter.FilterBuilder Maven / Gradle / Ivy
/*
* MIT License
*
* Copyright (c) 2019 WANG Lingsong
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.hazelcast.org.jsfr.json.filter;
import java.util.ArrayDeque;
import java.util.Deque;
/**
* Created by Leo on 2017/4/4.
*/
public class FilterBuilder {
private Deque stack = new ArrayDeque();
private JsonPathFilter resultFilter;
public FilterBuilder startNegationPredicate() {
NegationPredicate negationPredicate = new NegationPredicate();
if (!this.stack.isEmpty()) {
this.append(negationPredicate);
}
this.stack.push(negationPredicate);
return this;
}
public FilterBuilder endNegationAndPredicate() {
this.resultFilter = this.stack.pop();
return this;
}
public FilterBuilder startAndPredicate() {
AndPredicate newPredicate = new AndPredicate();
if (!this.stack.isEmpty()) {
this.append(newPredicate);
}
this.stack.push(newPredicate);
return this;
}
public FilterBuilder endAndPredicate() {
this.resultFilter = this.stack.pop();
return this;
}
public FilterBuilder startOrPredicate() {
OrPredicate newPredicate = new OrPredicate();
if (!this.stack.isEmpty()) {
this.append(newPredicate);
}
this.stack.push(newPredicate);
return this;
}
public FilterBuilder endOrPredicate() {
this.resultFilter = this.stack.pop();
return this;
}
public FilterBuilder append(JsonPathFilter filter) {
if (this.stack.isEmpty()) {
this.resultFilter = filter;
} else {
this.stack.peek().addFilter(filter);
}
return this;
}
public JsonPathFilter build() {
return this.resultFilter;
}
}