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AbstractProtocolDataWriter.java
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AbstractProtocolDataWriter.java
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package org.jumpmind.symmetric.io.data.writer;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.lang.StringUtils;
import org.jumpmind.db.model.Column;
import org.jumpmind.db.model.Table;
import org.jumpmind.db.util.BinaryEncoding;
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.DataContext;
import org.jumpmind.symmetric.io.data.IDataWriter;
import org.jumpmind.util.Statistics;
abstract public class AbstractProtocolDataWriter implements IDataWriter {
protected DataContext context;
protected Batch batch;
protected Table table;
protected Set<Table> processedTables = new HashSet<Table>();
protected String delimiter = ",";
protected boolean flushNodeId = true;
protected Map<Batch, Statistics> statistics = new HashMap<Batch, Statistics>();
protected List<IProtocolDataWriterListener> listeners;
protected String sourceNodeId;
public AbstractProtocolDataWriter(String sourceNodeId,
List<IProtocolDataWriterListener> listeners) {
this.listeners = listeners;
this.sourceNodeId = sourceNodeId;
}
public void open(DataContext context) {
this.context = context;
}
public void close() {
}
public void start(Batch batch) {
this.statistics.put(batch, new Statistics());
this.batch = batch;
if (listeners != null) {
for (IProtocolDataWriterListener listener : listeners) {
listener.start(context, batch);
}
}
if (flushNodeId) {
if (StringUtils.isNotBlank(sourceNodeId)) {
println(CsvConstants.NODEID, sourceNodeId);
}
BinaryEncoding binaryEncoding = batch.getBinaryEncoding();
if (binaryEncoding != null) {
println(CsvConstants.BINARY, binaryEncoding.name());
}
flushNodeId = false;
}
if (StringUtils.isNotBlank(batch.getChannelId())) {
println(CsvConstants.CHANNEL, batch.getChannelId());
}
println(CsvConstants.BATCH, Long.toString(batch.getBatchId()));
}
public boolean start(Table table) {
if (!batch.isIgnored()) {
this.table = table;
String catalogName = table.getCatalog();
println(CsvConstants.CATALOG, StringUtils.isNotBlank(catalogName) ? catalogName : "");
String schemaName = table.getSchema();
println(CsvConstants.SCHEMA, StringUtils.isNotBlank(schemaName) ? schemaName : "");
println(CsvConstants.TABLE, table.getName());
if (!processedTables.contains(table)) {
println(CsvConstants.KEYS, table.getPrimaryKeyColumns());
println(CsvConstants.COLUMNS, table.getColumns());
}
this.processedTables.add(table);
return true;
} else {
return false;
}
}
public void write(CsvData data) {
if (!batch.isIgnored()) {
statistics.get(batch).increment(DataWriterStatisticConstants.STATEMENTCOUNT);
statistics.get(batch).increment(DataWriterStatisticConstants.LINENUMBER);
switch (data.getDataEventType()) {
case INSERT:
println(CsvConstants.INSERT, data.getCsvData(CsvData.ROW_DATA));
break;
case UPDATE:
String oldData = data.getCsvData(CsvData.OLD_DATA);
if (StringUtils.isNotBlank(oldData)) {
println(CsvConstants.OLD, oldData);
}
println(CsvConstants.UPDATE, data.getCsvData(CsvData.ROW_DATA),
data.getCsvData(CsvData.PK_DATA));
break;
case DELETE:
oldData = data.getCsvData(CsvData.OLD_DATA);
if (StringUtils.isNotBlank(oldData)) {
println(CsvConstants.OLD, oldData);
}
println(CsvConstants.DELETE, data.getCsvData(CsvData.PK_DATA));
break;
case CREATE:
println(CsvConstants.CREATE, data.getCsvData(CsvData.ROW_DATA));
break;
case BSH:
println(CsvConstants.BSH, data.getCsvData(CsvData.ROW_DATA));
break;
case SQL:
println(CsvConstants.SQL, data.getCsvData(CsvData.ROW_DATA));
break;
}
}
}
public void end(Table table) {
}
final public void end(Batch batch, boolean inError) {
if (batch.isIgnored()) {
println(CsvConstants.IGNORE);
}
if (!inError) {
println(CsvConstants.COMMIT, Long.toString(batch.getBatchId()));
endBatch(batch);
}
if (listeners != null && !inError) {
for (IProtocolDataWriterListener listener : listeners) {
notifyEndBatch(batch, listener);
}
}
}
abstract protected void endBatch(Batch batch);
abstract protected void notifyEndBatch(Batch batch, IProtocolDataWriterListener listener);
protected int println(String key, List<Column> columns) {
return println(key, columns.toArray(new Column[columns.size()]));
}
protected int println(String key, Column[] columns) {
StringBuilder buffer = new StringBuilder(key);
for (int i = 0; i < columns.length; i++) {
buffer.append(delimiter);
buffer.append(columns[i].getName());
}
println(buffer.toString());
return buffer.length();
}
abstract protected void print(Batch batch, String data);
protected long println(String... data) {
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < data.length; i++) {
if (i != 0) {
buffer.append(delimiter);
}
buffer.append(data[i]);
}
buffer.append("\n");
print(batch, buffer.toString());
long byteCount = buffer.length();
statistics.get(batch).increment(DataWriterStatisticConstants.BYTECOUNT, byteCount);
return byteCount;
}
public void setDelimiter(String delimiter) {
this.delimiter = delimiter;
}
public String getDelimiter() {
return delimiter;
}
public Map<Batch, Statistics> getStatistics() {
return statistics;
}
}