Java Object to Json objectToString(StringBuilder bld, ObjectNode node, int depth, boolean newLine)

Description

object To String

License

Open Source License

Declaration

private static boolean objectToString(StringBuilder bld, ObjectNode node, int depth, boolean newLine) 

Method Source Code

//package com.java2s;
/*//  w ww. j a  va  2  s  .  co m
 Copyright 2013 Red Hat, Inc. and/or its affiliates.
    
 This file is part of lightblue.
    
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
    
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
    
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.Iterator;
import java.util.Map;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;

public class Main {
    private static boolean objectToString(StringBuilder bld, ObjectNode node, int depth, boolean newLine) {
        if (newLine) {
            indent(bld, depth);
            newLine = false;
        }
        if (node.size() > 0) {
            bld.append("{\n");
            newLine = true;
        }
        boolean first = true;
        for (Iterator<Map.Entry<String, JsonNode>> itr = node.fields(); itr.hasNext();) {
            if (first) {
                first = false;
            } else {
                if (newLine) {
                    indent(bld, depth);
                    newLine = false;
                }
                bld.append(',');
                bld.append('\n');
                newLine = true;
            }
            Map.Entry<String, JsonNode> entry = itr.next();
            indent(bld, depth);
            bld.append('\"');
            bld.append(entry.getKey());
            bld.append('\"');
            bld.append(':');
            newLine = toString(bld, entry.getValue(), depth + 1, false);
            if (newLine) {
                indent(bld, depth);
                newLine = false;
            }
        }
        if (node.size() > 0) {
            bld.append('\n');
            newLine = true;
        }
        if (newLine) {
            indent(bld, depth);
            newLine = false;
        }
        bld.append('}');
        return false;
    }

    private static void indent(StringBuilder bld, int depth) {
        int n = depth * 2;
        for (int i = 0; i < n; i++) {
            bld.append(' ');
        }
    }

    private static boolean toString(StringBuilder bld, JsonNode node, int depth, boolean newLine) {
        if (node instanceof ArrayNode) {
            return arrayToString(bld, (ArrayNode) node, depth, newLine);
        } else if (node instanceof ObjectNode) {
            return objectToString(bld, (ObjectNode) node, depth, newLine);
        } else {
            return valueToString(bld, node, depth, newLine);
        }
    }

    private static boolean arrayToString(StringBuilder bld, ArrayNode node, int depth, boolean newLine) {
        if (newLine) {
            indent(bld, depth);
            newLine = false;
        }
        bld.append("[");
        boolean first = true;
        for (Iterator<JsonNode> itr = node.elements(); itr.hasNext();) {
            if (first) {
                first = false;
            } else {
                bld.append(',');
            }
            newLine = toString(bld, itr.next(), depth + 1, newLine);
        }
        if (newLine) {
            indent(bld, depth);
        }
        bld.append(']');
        return false;
    }

    private static boolean valueToString(StringBuilder bld, JsonNode node, int depth, boolean newLine) {
        if (newLine) {
            indent(bld, depth);
            newLine = false;
        }
        bld.append(node.toString());
        return newLine;
    }
}

Related

1. obj2Json(Object obj)
2. object2Jason(Object obj)
3. objToJson(Object obj)
4. toJson(List list)
5. toJson(Object dto)
6. toJson(Object message)