JsonDocument.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.tuplejump.stargate.lucene.json;

import com.tuplejump.stargate.lucene.Options;
import com.tuplejump.stargate.lucene.Properties;
import org.apache.lucene.document.Field;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.map.MappingJsonFactory;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * User: satya
 * A collection of lucene fields from a JsonDocument.
 */
public abstract class JsonDocument implements Iterable<Field> {
    public static final JsonFactory jsonFactory = new MappingJsonFactory();

    protected List<Field> fields = new ArrayList<>();
    protected Properties jsonMapping;
    protected String jsonColName;

    static {
        jsonFactory.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
        jsonFactory.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
        jsonFactory.configure(JsonParser.Feature.ALLOW_COMMENTS, false);
    }

    /**
     * @return The fields resulting from the json passed.
     */
    public List<Field> getFields() {
        return fields;
    }

    protected JsonDocument(Properties properties, String jsonColName) {
        this.jsonColName = jsonColName;
        this.jsonMapping = properties.getFields().get(jsonColName);
    }

    @Override
    public Iterator<Field> iterator() {
        return fields.iterator();
    }

    protected Properties getProps(Iterable<String> fieldName) {
        return Options.getProps(jsonMapping, fieldName);
    }

}