/
CsvDataReader.java
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/
CsvDataReader.java
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package org.jumpmind.symmetric.io.data.reader;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.commons.lang.StringUtils;
import org.jumpmind.db.BinaryEncoding;
import org.jumpmind.db.model.Column;
import org.jumpmind.db.model.Table;
import org.jumpmind.exception.IoException;
import org.jumpmind.log.Log;
import org.jumpmind.log.LogFactory;
import org.jumpmind.symmetric.csv.CsvReader;
import org.jumpmind.symmetric.io.data.Batch;
import org.jumpmind.symmetric.io.data.CsvConstants;
import org.jumpmind.symmetric.io.data.CsvData;
import org.jumpmind.symmetric.io.data.CsvUtils;
import org.jumpmind.symmetric.io.data.DataContext;
import org.jumpmind.symmetric.io.data.DataEventType;
import org.jumpmind.symmetric.io.data.IDataReader;
import org.jumpmind.symmetric.io.data.IDataWriter;
import org.jumpmind.util.Statistics;
public class CsvDataReader implements IDataReader {
protected Log log = LogFactory.getLog(getClass());
protected Reader reader;
protected Map<Batch, Statistics> statistics = new HashMap<Batch, Statistics>();
protected CsvReader csvReader;
protected DataContext<? extends IDataReader, ? extends IDataWriter> context;
protected Map<String, Table> tables = new HashMap<String, Table>();
protected Object next;
protected Batch batch;
protected Table table;
protected String channelId;
protected String sourceNodeId;
protected BinaryEncoding binaryEncoding;
public CsvDataReader(StringBuilder input) {
this(new BufferedReader(new StringReader(input.toString())));
}
public CsvDataReader(String input) {
this(new BufferedReader(new StringReader(input)));
}
public CsvDataReader(Reader reader) {
this.reader = reader;
}
public CsvDataReader(File file) {
try {
FileInputStream fis = new FileInputStream(file);
InputStreamReader in = new InputStreamReader(fis, "UTF-8");
this.reader = new BufferedReader(in);
} catch (IOException ex) {
throw new IoException(ex);
}
}
public <R extends IDataReader,W extends IDataWriter> void open(DataContext<R,W> context) {
this.context = context;
this.csvReader = CsvUtils.getCsvReader(reader);
this.next = readNext();
}
protected Object readNext() {
try {
Set<String> keys = null;
String schemaName = null;
String catalogName = null;
String[] parsedOldData = null;
long bytesRead = 0;
while (csvReader.readRecord()) {
if (log.isDebugEnabled()) {
log.debug(csvReader.getRawRecord());
}
String[] tokens = csvReader.getValues();
if (batch == null) {
bytesRead += csvReader.getRawRecord().length();
} else {
statistics.get(batch).increment(CsvReaderStatistics.READ_BYTE_COUNT, csvReader.getRawRecord().length() + bytesRead);
bytesRead = 0;
}
if (tokens[0].equals(CsvConstants.BATCH)) {
Batch batch = new Batch(Long.parseLong(tokens[1]), channelId, binaryEncoding, sourceNodeId);
statistics.put(batch, new CsvReaderStatistics());
return batch;
} else if (tokens[0].equals(CsvConstants.NODEID)) {
this.sourceNodeId = tokens[1];
} else if (tokens[0].equals(CsvConstants.BINARY)) {
this.binaryEncoding = BinaryEncoding.valueOf(tokens[1]);
} else if (tokens[0].equals(CsvConstants.CHANNEL)) {
this.channelId = tokens[1];
} else if (tokens[0].equals(CsvConstants.SCHEMA)) {
schemaName = StringUtils.isBlank(tokens[1]) ? null : tokens[1];
} else if (tokens[0].equals(CsvConstants.CATALOG)) {
catalogName = StringUtils.isBlank(tokens[1]) ? null : tokens[1];
} else if (tokens[0].equals(CsvConstants.TABLE)) {
String tableName = tokens[1];
table = tables.get(Table.getFullyQualifiedTableName(catalogName, schemaName, tableName));
if (table != null) {
return table;
} else {
table = new Table(catalogName, schemaName, tableName);
}
} else if (tokens[0].equals(CsvConstants.KEYS)) {
if (keys == null) {
keys = new HashSet<String>(tokens.length);
}
for (int i = 1; i < tokens.length; i++) {
keys.add(tokens[i]);
}
} else if (tokens[0].equals(CsvConstants.COLUMNS)) {
for (int i = 1; i < tokens.length; i++) {
Column column = new Column(tokens[i], keys != null
&& keys.contains(tokens[i]));
table.addColumn(column);
}
tables.put(table.getFullyQualifiedTableName(), table);
return table;
} else if (tokens[0].equals(CsvConstants.COMMIT)) {
return null;
} else if (tokens[0].equals(CsvConstants.INSERT)) {
CsvData data = new CsvData();
data.setDataEventType(DataEventType.INSERT);
data.putParsedData(CsvData.ROW_DATA, Arrays.copyOfRange(tokens, 1, tokens.length));
return data;
} else if (tokens[0].equals(CsvConstants.OLD)) {
parsedOldData = Arrays.copyOfRange(tokens, 1, tokens.length);
} else if (tokens[0].equals(CsvConstants.UPDATE)) {
CsvData data = new CsvData();
data.setDataEventType(DataEventType.UPDATE);
data.putParsedData(CsvData.ROW_DATA, Arrays.copyOfRange(tokens, 1, table.getColumnCount() + 1));
data.putParsedData(CsvData.PK_DATA, Arrays.copyOfRange(tokens, table.getColumnCount() + 1,
tokens.length));
data.putParsedData(CsvData.OLD_DATA, parsedOldData);
return data;
} else if (tokens[0].equals(CsvConstants.DELETE)) {
CsvData data = new CsvData();
data.setDataEventType(DataEventType.DELETE);
data.putParsedData(CsvData.PK_DATA, Arrays.copyOfRange(tokens, 1, tokens.length));
data.putParsedData(CsvData.OLD_DATA, parsedOldData);
return data;
} else if (tokens[0].equals(CsvConstants.SQL)) {
CsvData data = new CsvData();
data.setDataEventType(DataEventType.SQL);
data.putCsvData(CsvData.ROW_DATA, tokens[1]);
return data;
} else if (tokens[0].equals(CsvConstants.BSH)) {
CsvData data = new CsvData();
data.setDataEventType(DataEventType.BSH);
data.putCsvData(CsvData.ROW_DATA, tokens[1]);
return data;
} else if (tokens[0].equals(CsvConstants.CREATE)) {
CsvData data = new CsvData();
data.setDataEventType(DataEventType.CREATE);
data.putCsvData(CsvData.ROW_DATA, tokens[1]);
return data;
} else {
log.info("Unable to handle unknown csv values: " + Arrays.toString(tokens));
}
}
} catch (IOException ex) {
throw new IoException(ex);
}
return null;
}
public Batch nextBatch() {
if (next instanceof Batch) {
this.batch = (Batch) next;
next = null;
return batch;
} else {
do {
next = readNext();
if (next instanceof Batch) {
this.batch = (Batch) next;
next = null;
return batch;
}
} while (next != null);
}
return null;
}
public Table nextTable() {
if (next instanceof Table) {
this.table = (Table) next;
next = null;
return table;
} else {
do {
next = readNext();
if (next instanceof Table) {
this.table = (Table) next;
next = null;
return table;
}
} while (next != null && !(next instanceof Batch));
}
return null;
}
public CsvData nextData() {
if (next instanceof CsvData) {
CsvData data = (CsvData) next;
next = null;
return data;
} else {
do {
next = readNext();
if (next instanceof CsvData) {
CsvData data = (CsvData) next;
next = null;
return data;
}
} while (next != null && !(next instanceof Batch) && !(next instanceof org.jumpmind.db.model.Table));
}
return null;
}
public void close() {
if (csvReader != null) {
csvReader.close();
}
}
public Map<Batch, Statistics> getStatistics() {
return statistics;
}
}