org.h2.jdbcx.JdbcXid Maven / Gradle / Ivy
/*
* Copyright 2004-2019 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.jdbcx;
import java.util.StringTokenizer;
import javax.transaction.xa.Xid;
import org.h2.api.ErrorCode;
import org.h2.message.DbException;
import org.h2.message.TraceObject;
import org.h2.util.StringUtils;
/**
* An object of this class represents a transaction id.
*/
public class JdbcXid extends TraceObject implements Xid {
private static final String PREFIX = "XID";
private final int formatId;
private final byte[] branchQualifier;
private final byte[] globalTransactionId;
JdbcXid(JdbcDataSourceFactory factory, int id, String tid) {
setTrace(factory.getTrace(), TraceObject.XID, id);
try {
StringTokenizer tokenizer = new StringTokenizer(tid, "_");
String prefix = tokenizer.nextToken();
if (!PREFIX.equals(prefix)) {
throw DbException.get(ErrorCode.WRONG_XID_FORMAT_1, tid);
}
formatId = Integer.parseInt(tokenizer.nextToken());
branchQualifier = StringUtils.convertHexToBytes(tokenizer.nextToken());
globalTransactionId = StringUtils.convertHexToBytes(tokenizer.nextToken());
} catch (RuntimeException e) {
throw DbException.get(ErrorCode.WRONG_XID_FORMAT_1, tid);
}
}
/**
* INTERNAL
*/
public static String toString(Xid xid) {
StringBuilder builder = new StringBuilder()
.append(PREFIX)
.append('_')
.append(xid.getFormatId())
.append('_');
StringUtils.convertBytesToHex(builder, xid.getBranchQualifier())
.append('_');
StringUtils.convertBytesToHex(builder, xid.getGlobalTransactionId());
return builder.toString();
}
/**
* Get the format id.
*
* @return the format id
*/
@Override
public int getFormatId() {
debugCodeCall("getFormatId");
return formatId;
}
/**
* The transaction branch identifier.
*
* @return the identifier
*/
@Override
public byte[] getBranchQualifier() {
debugCodeCall("getBranchQualifier");
return branchQualifier;
}
/**
* The global transaction identifier.
*
* @return the transaction id
*/
@Override
public byte[] getGlobalTransactionId() {
debugCodeCall("getGlobalTransactionId");
return globalTransactionId;
}
}