org.oncoblocks.centromere.mongodb.MongoImportTempFileWriter.java Source code

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Here is the source code for org.oncoblocks.centromere.mongodb.MongoImportTempFileWriter.java

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/*
 * Copyright 2016 William Oemler, Blueprint Medicines
 *
 * 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.oncoblocks.centromere.mongodb;

import org.oncoblocks.centromere.core.dataimport.RecordWriter;
import org.oncoblocks.centromere.core.dataimport.DataImportException;
import org.oncoblocks.centromere.core.dataimport.AbstractRecordFileWriter;
import org.oncoblocks.centromere.core.model.Model;
import org.springframework.data.mongodb.core.MongoTemplate;

import java.io.FileWriter;
import java.io.IOException;

/**
 * Implementation of {@link RecordWriter} that 
 *   creates temporary files with {@link Model} records formatted in JSON, for importing via 
 *   MongoImport.
 * 
 * @author woemler
 */
public class MongoImportTempFileWriter<T extends Model<?>> extends AbstractRecordFileWriter<T> {

    private final ImportUtils importUtils;

    public MongoImportTempFileWriter(ImportUtils importUtils) {
        this.importUtils = importUtils;
    }

    public MongoImportTempFileWriter(MongoTemplate mongoTemplate) {
        this.importUtils = new ImportUtils(mongoTemplate);
    }

    /**
     * Writes a {@link Model} record to a temp file, formatted into JSON using {@link ImportUtils#convertEntityToJson(Object)}.
     * 
     * @param record
     * @throws DataImportException
     */
    public void writeRecord(T record) throws DataImportException {
        FileWriter writer = this.getWriter();
        try {
            writer.write(importUtils.convertEntityToJson(record));
            writer.write("\n");
        } catch (IOException e) {
            e.printStackTrace();
            throw new DataImportException(e.getMessage());
        }
    }

}