Examples with TransactionInfo org.apache.derby.iapi.store.access.TransactionInfo used on opensource projects

Example 1 with TransactionInfo

use of org.apache.derby.iapi.store.access.TransactionInfo in project derby by apache.

the class TransactionTable method next.

/**
 *		@see java.sql.ResultSet#next
 *		@exception SQLException if no transaction context can be found
 */
public boolean next() throws SQLException {
    if (!initialized) {
        LanguageConnectionContext lcc = ConnectionUtil.getCurrentLCC();
        transactionTable = lcc.getTransactionExecute().getAccessManager().getTransactionInfo();
        initialized = true;
        currentRow = -1;
    }
    if (transactionTable == null)
        return false;
    for (currentRow++; currentRow < transactionTable.length; currentRow++) {
        TransactionInfo info = transactionTable[currentRow];
        if (info == null)
            // transaction object in flux while the
            continue;
        // snap shot was taken, get another row
        return true;
    }
    // currentRow >= transactionTable.length
    transactionTable = null;
    return false;
}

Example 2 with TransactionInfo

use of org.apache.derby.iapi.store.access.TransactionInfo in project derby by apache.

the class TransactionTable method getString.

/**
 *		All columns in TransactionTable VTI is of String type.
 *		@see java.sql.ResultSet#getString
 */
public String getString(int columnNumber) {
    TransactionInfo info = transactionTable[currentRow];
    String str = null;
    switch(columnNumber) {
        case 1:
            str = info.getTransactionIdString();
            break;
        case 2:
            str = info.getGlobalTransactionIdString();
            break;
        case 3:
            str = info.getUsernameString();
            break;
        case 4:
            str = info.getTransactionTypeString();
            break;
        case 5:
            str = info.getTransactionStatusString();
            break;
        case 6:
            str = info.getFirstLogInstantString();
            break;
        case 7:
            str = info.getStatementTextString();
            str = StringUtil.truncate(str, Limits.DB2_VARCHAR_MAXWIDTH);
            break;
        default:
            str = null;
    }
    wasNull = (str == null);
    return str;
}

Example 3 with TransactionInfo

use of org.apache.derby.iapi.store.access.TransactionInfo in project derby by apache.

the class Deadlock method buildException.

/**
 * Build an exception that describes a deadlock.
 *
 * @param factory the lock factory requesting the exception
 * @param data an array with information about who's involved in
 * a deadlock (as returned by {@link #handle})
 * @return a deadlock exception
 */
static StandardException buildException(AbstractPool factory, Object[] data) {
    Stack chain = (Stack) data[0];
    Dictionary waiters = (Dictionary) data[1];
    LanguageConnectionContext lcc = (LanguageConnectionContext) getContext(LanguageConnectionContext.CONTEXT_ID);
    TableNameInfo tabInfo = null;
    TransactionInfo[] tt = null;
    TransactionController tc = null;
    if (lcc != null) {
        try {
            tc = lcc.getTransactionExecute();
            tabInfo = new TableNameInfo(lcc, false);
            tt = tc.getAccessManager().getTransactionInfo();
        } catch (StandardException se) {
        // just don't get any table info.
        }
    }
    StringBuffer sb = new StringBuffer(200);
    Hashtable<String, Object> attributes = new Hashtable<String, Object>(17);
    String victimXID = null;
    for (int i = 0; i < chain.size(); i++) {
        Object space = chain.elementAt(i);
        if (space instanceof List) {
            List grants = (List) space;
            if (grants.size() != 0) {
                sb.append("  Granted XID : ");
                for (int j = 0; j < grants.size(); j++) {
                    if (j != 0)
                        sb.append(", ");
                    Lock gl = (Lock) grants.get(j);
                    sb.append("{");
                    sb.append(gl.getCompatabilitySpace().getOwner());
                    sb.append(", ");
                    sb.append(gl.getQualifier());
                    sb.append("} ");
                }
                sb.append('\n');
            }
            continue;
        }
        // Information about the lock we are waiting on
        // TYPE |TABLENAME                     |LOCKNAME
        Lock lock = ((Lock) waiters.get(space));
        // see if this lockable object wants to participate
        lock.getLockable().lockAttributes(VirtualLockTable.ALL, attributes);
        addInfo(sb, "Lock : ", attributes.get(VirtualLockTable.LOCKTYPE));
        if (tabInfo != null) {
            Long conglomId = (Long) attributes.get(VirtualLockTable.CONGLOMID);
            if (conglomId == null) {
                Long containerId = (Long) attributes.get(VirtualLockTable.CONTAINERID);
                try {
                    conglomId = tc.findConglomid(containerId.longValue());
                } catch (StandardException se) {
                }
            }
            addInfo(sb, ", ", tabInfo.getTableName(conglomId));
        }
        addInfo(sb, ", ", attributes.get(VirtualLockTable.LOCKNAME));
        sb.append('\n');
        String xid = String.valueOf(lock.getCompatabilitySpace().getOwner());
        if (i == 0)
            victimXID = xid;
        addInfo(sb, "  Waiting XID : {", xid);
        addInfo(sb, ", ", lock.getQualifier());
        sb.append("} ");
        if (tt != null) {
            for (int tti = tt.length - 1; tti >= 0; tti--) {
                TransactionInfo ti = tt[tti];
                // ti.getTransactionIdString() or ti can return null.
                if (ti != null) {
                    String idString = ti.getTransactionIdString();
                    if (idString != null && idString.equals(xid)) {
                        addInfo(sb, ", ", ti.getUsernameString());
                        addInfo(sb, ", ", ti.getStatementTextString());
                        break;
                    }
                }
            }
        }
        sb.append('\n');
        attributes.clear();
    }
    StandardException se = StandardException.newException(SQLState.DEADLOCK, sb.toString(), victimXID);
    se.setReport(factory.deadlockMonitor);
    return se;
}