com.ibm.watson.catalyst.jumpqa.template.TemplateReader.java Source code

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Here is the source code for com.ibm.watson.catalyst.jumpqa.template.TemplateReader.java

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/*******************************************************************************
 * Copyright 2015 IBM Corporation
 *
 * 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 com.ibm.watson.catalyst.jumpqa.template;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.StringJoiner;
import java.util.logging.Logger;

import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVParser;

import com.ibm.watson.catalyst.objectio.readers.AReader;
import com.ibm.watson.catalyst.objectio.readers.IReader;

/**
 * Reads templates from a file and returns a collection containing the
 * templates.
 * 
 * @author Will Beason
 * @version 0.1.1
 * @since 0.1.0
 *
 */
public class TemplateReader extends AReader<ITemplate> implements IReader {

    @Override
    public List<ITemplate> read(final List<String> strings) {
        strings.stream().forEachOrdered((s) -> sj.add(s));
        return read(sj.toString());
    }

    @Override
    public List<ITemplate> read(final String aString) {
        List<ITemplate> result = new ArrayList<ITemplate>();

        CSVParser parser;
        try {
            parser = CSVParser.parse(aString, format);
        } catch (IOException e) {
            throw new RuntimeException("IOError parsing CSV.", e);
        }
        final TemplateFactory tf = new TemplateFactory();
        parser.forEach((record) -> result.add(tf.readRecord(record)));

        logger.info("Read " + result.size() + " templates");
        return result;
    }

    @Override
    protected ITemplate string2Object(String aString) {
        throw new UnsupportedOperationException();
    }

    private static final CSVFormat format = CSVFormat.RFC4180.withHeader().withDelimiter('\t');
    private static final StringJoiner sj = new StringJoiner("\n");
    private static final Logger logger = Logger.getLogger(TemplateReader.class.getName());

}