Examples with Value com.wplatform.ddal.value.Value used on opensource projects

Example 66 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class DeleteExecutor method doTranslate.

@Override
protected List<Value> doTranslate(TableNode node, SearchRow row, StatementBuilder buff) {
    ArrayList<Value> params = New.arrayList();
    TableFilter tableFilter = prepared.getTableFilter();
    String forTable = node.getCompositeObjectName();
    Expression condition = prepared.getCondition();
    Expression limitExpr = prepared.getLimitExpr();
    buff.append("DELETE FROM ");
    buff.append(identifier(forTable));
    if (condition != null) {
        condition.exportParameters(tableFilter, params);
        buff.append(" WHERE ").append(StringUtils.unEnclose(condition.getSQL()));
    }
    if (limitExpr != null) {
        limitExpr.exportParameters(tableFilter, params);
        buff.append(" LIMIT ").append(StringUtils.unEnclose(limitExpr.getSQL()));
    }
    return params;
}

Example 67 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class JdbcConnection method createBlob.

/**
 * Create a Blob value from this input stream.
 *
 * @param x      the input stream
 * @param length the length (if smaller or equal than 0, all data until the
 *               end of file is read)
 * @return the value
 */
public Value createBlob(InputStream x, long length) {
    if (x == null) {
        return ValueNull.INSTANCE;
    }
    if (length <= 0) {
        length = -1;
    }
    Value v = ValueLobDb.createTempBlob(x, length);
    session.addTemporaryLob(v);
    return v;
}

Example 68 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class JdbcConnection method createNClob.

/**
 * Create a new empty NClob object.
 *
 * @return the object
 */
@Override
public NClob createNClob() throws SQLException {
    try {
        int id = getNextId(TraceObject.CLOB);
        debugCodeAssign("NClob", TraceObject.CLOB, id, "createNClob()");
        checkClosedForWrite();
        try {
            Value v = ValueLobDb.createTempClob(new InputStreamReader(new ByteArrayInputStream(Utils.EMPTY_BYTES)), 0);
            session.addTemporaryLob(v);
            return new JdbcClob(this, v, id);
        } finally {
            afterWriting();
        }
    } catch (Exception e) {
        throw logAndConvert(e);
    }
}

Example 69 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class JdbcConnection method createClob.

/**
 * Create a Clob value from this reader.
 *
 * @param x      the reader
 * @param length the length (if smaller or equal than 0, all data until the
 *               end of file is read)
 * @return the value
 */
public Value createClob(Reader x, long length) {
    if (x == null) {
        return ValueNull.INSTANCE;
    }
    if (length <= 0) {
        length = -1;
    }
    Value v = ValueLobDb.createTempClob(x, length);
    session.addTemporaryLob(v);
    return v;
}

Example 70 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class Session method getVariable.

/**
 * Get the value of the specified user defined variable. This method always
 * returns a value; it returns ValueNull.INSTANCE if the variable doesn't
 * exist.
 *
 * @param name the variable name
 * @return the value, or NULL
 */
public Value getVariable(String name) {
    initVariables();
    Value v = variables.get(name);
    return v == null ? ValueNull.INSTANCE : v;
}