BackendMaskInterpreter.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.workbench.common.forms.commons.rendering.server.util.masks;

import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import org.kie.workbench.common.forms.commons.rendering.shared.util.masks.MaskInterpreter;
import org.kie.workbench.common.forms.commons.rendering.shared.util.masks.ModelInterpreter;

public class BackendMaskInterpreter<T> extends MaskInterpreter<T> {

    public BackendMaskInterpreter(String mask) {
        super(mask);
    }

    @Override
    protected ModelInterpreter<T> getModelInterpreter(T model) {
        Gson gson = new Gson();

        JsonObject jsonObject = gson.toJsonTree(model).getAsJsonObject();

        return propertyName -> {
            String value = "";
            JsonElement propertyValue = jsonObject.get(propertyName);
            if (propertyValue != null) {
                value = propertyValue.getAsString();
            }
            return value;
        };
    }
}