ReadableTableFactoryBean.java

/*
 * Copyright 2016 the original author or authors.
 *
 * 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.springframework.cloud.stream.module.gpfdist.sink.support;

import java.util.Arrays;
import java.util.List;

import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.StringUtils;

/**
 * {@link FactoryBean} creating instances of a {@link ReadableTable}.
 *
 * @author Janne Valkealahti
 * @author Gary Russell
 */
public class ReadableTableFactoryBean implements FactoryBean<ReadableTable>, InitializingBean {

	private ControlFile controlFile;
	private List<String> locations;
	private String columns;
	private String like;
	private boolean keeptable;
	private Format format = Format.TEXT;
	private Character delimiter;
	private String nullString;
	private Character escape;
	private Character quote;
	private String[] forceQuote;
	private String logErrorsInto;
	private Integer segmentRejectLimit;
	private SegmentRejectType segmentRejectType;

	@Override
	public void afterPropertiesSet() throws Exception {
		if (controlFile != null) {
			if (controlFile.getGploadInputDelimiter() != null) {
				this.delimiter = controlFile.getGploadInputDelimiter();
			}
		}
	}

	@Override
	public ReadableTable getObject() throws Exception {
		ReadableTable w = new ReadableTable();
		w.setLocations(locations);
		w.setColumns(columns);
		w.setLike(like);
		if (StringUtils.hasText(logErrorsInto)) {
			w.setLogErrorsInto(logErrorsInto);
		}
		if (segmentRejectLimit != null && segmentRejectLimit > 0) {
			w.setSegmentRejectLimit(segmentRejectLimit);
		}
		w.setSegmentRejectType(segmentRejectType);

		if (format == Format.TEXT) {
			Character delim = delimiter != null ? delimiter : Character.valueOf('\t');
			w.setTextFormat(delim, nullString, escape);
		}
		else if (format == Format.CSV) {
			Character delim = delimiter != null ? delimiter : Character.valueOf(',');
			w.setCsvFormat(quote, delim, nullString, forceQuote, escape);
		}

		return w;
	}

	@Override
	public Class<ReadableTable> getObjectType() {
		return ReadableTable.class;
	}

	@Override
	public boolean isSingleton() {
		return true;
	}

	public void setControlFile(ControlFile controlFile) {
		this.controlFile = controlFile;
	}

	/**
	 * Gets the segment reject limit.
	 *
	 * @return the segment reject limit
	 */
	public Integer getSegmentRejectLimit() {
		return segmentRejectLimit;
	}

	/**
	 * Sets the segment reject limit.
	 *
	 * @param segmentRejectLimit the new segment reject limit
	 */
	public void setSegmentRejectLimit(Integer segmentRejectLimit) {
		this.segmentRejectLimit = segmentRejectLimit;
	}

	/**
	 * Gets the segment reject type.
	 *
	 * @return the segment reject type
	 */
	public SegmentRejectType getSegmentRejectType() {
		return segmentRejectType;
	}

	/**
	 * Sets the segment reject as a string. This method is for convenience
	 * to be able to set percent reject type just by calling with '3%' and
	 * otherwise it uses rows. All this assuming that parsing finds '%' characher
	 * and is able to parse a raw reject number.
	 *
	 * @param reject the new segment reject
	 */
	public void setSegmentReject(String reject) {
		if (!StringUtils.hasText(reject)) {
			return;
		}
		Integer parsedLimit = null;
		try {
			parsedLimit = Integer.parseInt(reject);
			segmentRejectType = SegmentRejectType.ROWS;
		} catch (NumberFormatException e) {
		}
		if (parsedLimit == null && reject.contains("%")) {
			try {
				parsedLimit = Integer.parseInt(reject.replace("%", "").trim());
				segmentRejectType = SegmentRejectType.PERCENT;
			} catch (NumberFormatException e) {
			}
		}
		segmentRejectLimit = parsedLimit;
	}

	/**
	 * Sets the segment reject type.
	 *
	 * @param segmentRejectType the new segment reject type
	 */
	public void setSegmentRejectType(SegmentRejectType segmentRejectType) {
		if (segmentRejectType != null) {
			this.segmentRejectType = segmentRejectType;
		}
	}

	/**
	 * Gets the log errors table.
	 *
	 * @return the log errors table
	 */
	public String getLogErrorsInto() {
		return logErrorsInto;
	}

	/**
	 * Sets the log errors table.
	 *
	 * @param logErrorsInto the new log errors table
	 */
	public void setLogErrorsInto(String logErrorsInto) {
		this.logErrorsInto = logErrorsInto;
	}

	public Character getQuote() {
		return quote;
	}

	public void setQuote(Character quote) {
		this.quote = quote;
	}

	public String[] getForceQuote() {
		return forceQuote;
	}

	public void setForceQuote(String[] forceQuote) {
		this.forceQuote = Arrays.copyOf(forceQuote, forceQuote.length);
	}

	public Character getDelimiter() {
		return delimiter;
	}

	public void setDelimiter(Character delimiter) {
		this.delimiter = delimiter;
	}

	public String getNullString() {
		return nullString;
	}

	public void setNullString(String nullString) {
		this.nullString = nullString;
	}

	public Character getEscape() {
		return escape;
	}

	public void setEscape(Character escape) {
		this.escape = escape;
	}

	public List<String> getLocations() {
		return locations;
	}

	public void setLocations(List<String> locations) {
		this.locations = locations;
	}

	public String getColumns() {
		return columns;
	}

	public void setColumns(String columns) {
		this.columns = columns;
	}

	public String getLike() {
		return like;
	}

	public void setLike(String like) {
		this.like = like;
	}

	public boolean isKeeptable() {
		return keeptable;
	}

	public void setKeeptable(boolean keeptable) {
		this.keeptable = keeptable;
	}

	public Format getFormat() {
		return format;
	}

	public void setFormat(Format format) {
		this.format = format;
	}
}