Examples with VariableContext org.teiid.query.sql.util.VariableContext used on opensource projects

Example 21 with VariableContext

use of org.teiid.query.sql.util.VariableContext in project teiid by teiid.

the class DependentProcedureAccessNode method open.

@Override
public void open() throws TeiidComponentException, TeiidProcessingException {
    CommandContext context = getContext().clone();
    context.pushVariableContext(new VariableContext());
    this.setContext(context);
    DependentProcedureExecutionNode.shareVariableContext(this, context);
    super.open();
}

Example 22 with VariableContext

use of org.teiid.query.sql.util.VariableContext in project teiid by teiid.

the class AssignmentInstruction method process.

/**
 * <p> Updates the current variable context with a value for the Variable
 * defined using a DeclareInstruction, the variable value is obtained by either processing
 * a expression or a command(stored as a processplan). The Processing of the command is
 * expected to result in 1 column, 1 row tuple, if more than a row is returned an exception
 * is thrown. Also updates the program counter.</p>
 * @throws BlockedException
 * @throws TeiidComponentException if error processing command or expression on this instruction
 */
public void process(ProcedurePlan procEnv) throws BlockedException, TeiidComponentException, TeiidProcessingException {
    VariableContext varContext = procEnv.getCurrentVariableContext();
    Object value = null;
    if (this.expression != null) {
        value = procEnv.evaluateExpression(this.expression);
    }
    varContext.setValue(getVariable(), value);
    LogManager.logTrace(LogConstants.CTX_DQP, new Object[] { // $NON-NLS-1$
    this.toString() + " The variable " + getVariable() + " in the variablecontext is updated with the value :", // $NON-NLS-1$
    value });
}