com.ibm.commons.util.io.json.util.JsonBuilder Maven / Gradle / Ivy
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/*
* © Copyright IBM Corp. 2012-2013
*
* 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://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 com.ibm.commons.util.io.json.util;
import java.io.IOException;
import java.util.Date;
import com.ibm.commons.util.io.json.JsonException;
import com.ibm.commons.util.io.json.JsonFactory;
import com.ibm.commons.util.io.json.JsonGenerator;
import com.ibm.commons.util.io.json.JsonJavaFactory;
/**
* Specialized JSON writer within a StringBuilder.
*
* @author Philippe Riand
*/
public class JsonBuilder extends JsonGenerator.StringBuilderGenerator {
private int objectLevels = 0;
private boolean first[] = new boolean[32]; // max 32 for now...
public JsonBuilder(boolean compact) {
super(JsonJavaFactory.instanceEx,new StringBuilder(),compact);
}
public JsonBuilder(StringBuilder b, boolean compact) {
super(JsonJavaFactory.instanceEx,b,compact);
}
public JsonBuilder(JsonFactory factory, StringBuilder b, boolean compact) {
super(factory,b,compact);
}
public void startObject() throws IOException {
nl();
indent();
out('{');
first[++objectLevels]=true;
incIndent();
}
public void endObject() throws IOException {
nl();
decIndent();
indent();
out('}');
first[--objectLevels]=false;
}
public void startArray() throws IOException {
nl();
indent();
out('[');
first[++objectLevels]=true;
incIndent();
}
public void endArray() throws IOException {
nl();
decIndent();
indent();
out(']');
first[--objectLevels]=false;
}
public void startArrayItem() throws IOException {
if(!first[objectLevels]) {
out(',');
}
}
public void endArrayItem() throws IOException {
first[objectLevels]=false;
}
public void startProperty(String propertyName) throws IOException {
if(!first[objectLevels]) {
out(',');
} else {
first[objectLevels]=false;
}
nl();
incIndent();
indent();
outPropertyName(propertyName);
out(':');
}
public void endProperty() throws IOException {
decIndent();
}
public void set(String propertyName, Object value) throws IOException, JsonException {
startProperty(propertyName);
outLiteral(value);
}
public void setBoolean(String propertyName, boolean value) throws IOException, JsonException {
startProperty(propertyName);
outBooleanLiteral(value);
}
public void setNumber(String propertyName, double value) throws IOException, JsonException {
startProperty(propertyName);
outNumberLiteral(value);
}
public void setString(String propertyName, String value) throws IOException, JsonException {
startProperty(propertyName);
outStringLiteral(value);
}
public void setDate(String propertyName, Date value) throws IOException, JsonException {
startProperty(propertyName);
outDateLiteral_(value);
}
}