com.meltmedia.dropwizard.crypto.JsonPointerEditor.java Source code

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Here is the source code for com.meltmedia.dropwizard.crypto.JsonPointerEditor.java

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/**
 * Copyright (C) 2014 meltmedia (christian.trimble@meltmedia.com)
 *
 * 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.meltmedia.dropwizard.crypto;

import com.fasterxml.jackson.core.JsonPointer;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;

public class JsonPointerEditor {
    JsonNode root;
    private JsonPointer pointer;

    public JsonPointerEditor(JsonNode root, JsonPointer pointer) {
        this.root = root;
        this.pointer = pointer;
    }

    public JsonNode getRoot() {
        return root;
    }

    public JsonNode getValue() {
        return root.at(pointer);
    }

    public JsonNode setValue(JsonNode value) {
        JsonPointer currentPointer = pointer;
        JsonNode currentNode = root;
        JsonNode parentNode = null;
        String matchingProperty = null;
        int matchingIndex = -1;

        while (!"".equals(currentPointer.getMatchingProperty())) {
            parentNode = currentNode;
            matchingProperty = currentPointer.getMatchingProperty();
            matchingIndex = currentPointer.getMatchingIndex();
            currentNode = currentNode.get(matchingProperty);
            currentPointer = currentPointer.tail();
        }

        if (parentNode == null) {
            root = value;
        } else if (parentNode instanceof ObjectNode) {
            ((ObjectNode) parentNode).set(matchingProperty, value);
        } else if (parentNode instanceof ArrayNode) {
            ((ArrayNode) parentNode).set(matchingIndex, value);
        }

        return value;
    }
}