Examples with Expression org.teiid.language.Expression used on opensource projects

Example 46 with Expression

use of org.teiid.language.Expression in project teiid by teiid.

the class CoherenceVisitor method visit.

public void visit(Like obj) {
    // $NON-NLS-1$
    LogManager.logTrace(LogConstants.CTX_CONNECTOR, "Parsing LIKE criteria.");
    // Convert LIKE to Equals, where any "%" symbol is replaced with "*".
    try {
        Comparison.Operator op = Operator.EQ;
        Expression lhs = ((Like) obj).getLeftExpression();
        Expression rhs = ((Like) obj).getRightExpression();
        String lhsString = getExpressionString(lhs);
        String rhsString = getExpressionString(rhs);
        // rhsString = rhsString.replace("%", "*"); //$NON-NLS-1$ //$NON-NLS-2$
        filter = CoherenceFilterUtil.createFilter(lhsString + " LIKE \'" + rhsString + "\'");
    } catch (TranslatorException t) {
        exception = t;
    }
}

Example 47 with Expression

use of org.teiid.language.Expression in project teiid by teiid.

the class CoherenceVisitor method visit.

public void visit(In obj) {
    // $NON-NLS-1$
    LogManager.logTrace(LogConstants.CTX_CONNECTOR, "Parsing IN criteria.");
    // isNegated = ((In) criteria).isNegated();
    try {
        Expression lhs = ((In) obj).getLeftExpression();
        String lhsString = getExpressionString(lhs);
        List<Expression> rhsList = ((In) obj).getRightExpressions();
        Class type = null;
        List parms = new ArrayList(rhsList.size());
        Iterator iter = rhsList.iterator();
        while (iter.hasNext()) {
            Expression expr = (Expression) iter.next();
            type = addParmFromExpression(expr, parms);
        }
        addInCriteria(lhsString, parms, type);
    // filter = CoherenceFilterUtil.createInFilter(lhsString, parms, type);
    } catch (TranslatorException t) {
        exception = t;
    }
}

Example 48 with Expression

use of org.teiid.language.Expression in project teiid by teiid.

the class TickerCollectorVisitor method visit.

public void visit(Comparison obj) {
    Expression expr = obj.getRightExpression();
    addTickerFromExpression(expr);
}

Example 49 with Expression

use of org.teiid.language.Expression in project teiid by teiid.

the class YahooExecution method getNeededColumns.

/**
 * @param select
 * @return
 * @throws TranslatorException
 */
static int[] getNeededColumns(List<DerivedColumn> select) throws TranslatorException {
    int[] cols = new int[select.size()];
    Iterator<DerivedColumn> iter = select.iterator();
    for (int i = 0; iter.hasNext(); i++) {
        DerivedColumn symbol = iter.next();
        Expression expr = symbol.getExpression();
        if (expr instanceof ColumnReference) {
            Column element = ((ColumnReference) expr).getMetadataObject();
            cols[i] = element.getPosition();
        } else {
            // $NON-NLS-1$
            throw new TranslatorException(YahooPlugin.Util.getString("YahooExecution.Invalid_select_symbol", expr));
        }
    }
    return cols;
}

Example 50 with Expression

use of org.teiid.language.Expression in project teiid by teiid.

the class TestInsertImpl method testExpressionsInInsert.

public void testExpressionsInInsert() throws Exception {
    // $NON-NLS-1$
    Insert insert = example2("a.b");
    assertNotNull(insert.getColumns());
    assertEquals(1, insert.getColumns().size());
    for (Iterator i = insert.getColumns().iterator(); i.hasNext(); ) {
        assertTrue(i.next() instanceof ColumnReference);
    }
    assertNotNull(insert.getValueSource());
    assertEquals(1, ((ExpressionValueSource) insert.getValueSource()).getValues().size());
    for (Iterator i = ((ExpressionValueSource) insert.getValueSource()).getValues().iterator(); i.hasNext(); ) {
        assertTrue(i.next() instanceof Expression);
    }
}