edu.umn.msi.tropix.webgui.client.utils.JObject.java Source code

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/*******************************************************************************
 * Copyright 2009 Regents of the University of Minnesota. All rights
 * reserved.
 * Copyright 2009 Mayo Foundation for Medical Education and Research.
 * All rights reserved.
 *
 * This program is made available under the terms of the Eclipse
 * Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * 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 INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS
 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
 * PARTICULAR PURPOSE.  See the License for the specific language
 * governing permissions and limitations under the License.
 *
 * Contributors:
 * Minnesota Supercomputing Institute - initial API and implementation
 ******************************************************************************/

package edu.umn.msi.tropix.webgui.client.utils;

// TODO: Implement putting.

import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONParser;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;

public interface JObject {
    String getString(String key);

    String getStringOrNull(String key);

    JObject getJObject(String key);

    JObject getJObjectOrNull(String key);

    JArray getJArray(String key);

    JArray getJArrayOrNull(String key);

    boolean getBoolean(String key);

    int getInt(String key);

    double getDouble(String key);

    boolean containsKey(String key);

    java.util.Set<String> keySet();

    int size();

    String toString();

    public static class Factory {
        public static JObject create(final String string) {
            return Factory.create(JSONParser.parse(string));
        }

        public static JObject create(final JSONValue value) {
            return Factory.create(value.isObject());
        }

        public static JObject create(final JSONObject object) {
            return new JObjectImpl(object);
        }
    }
}

abstract class AbstractJObjectImpl implements JObject {
    public abstract String getString(String key);

    public abstract String getStringOrNull(String key);

    public abstract JObject getJObject(String key);

    public abstract JObject getJObjectOrNull(String key);

    public abstract JArray getJArray(String key);

    public abstract JArray getJArrayOrNull(String key);

    private JSONObject object;

    AbstractJObjectImpl(final JSONObject object) {
        this.setObject(object);
    }

    public boolean containsKey(final String key) {
        return this.getObject().containsKey(key);
    }

    public java.util.Set<String> keySet() {
        return this.getObject().keySet();
    }

    public int size() {
        return this.getObject().size();
    }

    public String toString() {
        return this.getObject().toString();
    }

    void setObject(final JSONObject object) {
        this.object = object;
    }

    JSONObject getObject() {
        return object;
    }
}

class JObjectImpl extends AbstractJObjectImpl {
    JObjectImpl(final JSONObject object) {
        super(object);
    }

    public String getString(final String key) {
        return this.getObject().get(key).isString().stringValue();
    }

    public String getStringOrNull(final String key) {
        final JSONValue value = this.getObject().get(key);
        if (value == null) {
            return null;
        }
        final JSONString jsonString = value.isString();
        if (value == null) {
            return null;
        }
        return jsonString.stringValue();
    }

    public JObject getJObject(final String key) {
        return new JObjectImpl(this.getObject().get(key).isObject());
    }

    public JObject getJObjectOrNull(final String key) {
        final JSONValue value = this.getObject().get(key);
        if (value == null) {
            return null;
        }
        return new JObjectImpl(value.isObject());
    }

    public JArray getJArray(final String key) {
        return new JArrayImpl(JArray.Utils.toJSONArray(this.getObject().get(key)));
    }

    public JArray getJArrayOrNull(final String key) {
        final JSONValue value = this.getObject().get(key);
        if (value == null) {
            return null;
        }
        final JSONArray array = JArray.Utils.toJSONArray(value);
        if (array == null) {
            return null;
        }
        return new JArrayImpl(array);
    }

    public boolean getBoolean(final String key) {
        return this.getObject().get(key).isBoolean().booleanValue();
    }

    public int getInt(final String key) {
        return Integer.parseInt(this.getObject().get(key).isString().stringValue());
    }

    public double getDouble(final String key) {
        return this.getObject().get(key).isNumber().doubleValue();
    }

}