com.tananaev.jsonpatch.operation.RemoveOperation Maven / Gradle / Ivy

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package com.tananaev.jsonpatch.operation;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.tananaev.jsonpatch.JsonPath;

public class RemoveOperation extends AbsOperation{

    public RemoveOperation( JsonPath path ) {
        this.path = path;
    }

    @Override
    public String getOperationName() {
        return "remove";
    }

    @Override
    public JsonElement apply(JsonElement original) {
        JsonElement result = duplicate( original );

        JsonElement item = path.head().navigate(result);

        if ( item.isJsonObject() ){
            item.getAsJsonObject().remove(path.tail());
        } else if ( item.isJsonArray() ){
            JsonArray array = item.getAsJsonArray();

            int index = (path.tail().equals("-")) ? array.size() : Integer.valueOf(path.tail());

            array.remove(index);
        }

        return result;
    }

}