Examples of org.teiid.query.sql.symbol.ExpressionSymbol

org.teiid.query.sql.symbol.ExpressionSymbol

This is a subclass of Symbol representing an expression in the SELECT clause. The expression may be a constant, function, or scalar subquery. The name of this symbol is always generated and typically should not be displayed. If necessary, the ExpressionSymbol may be wrapped by an AliasSymbol to register the name in a query. The definition of the symbol is the functional expression. Resolution will produce a list of groups and elements used by the expression.

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol(
      "expr",  //$NON-NLS-1$
      new Function("-", new Expression[] { new Constant(new Integer(5)), new Constant(null) }) ) ); //$NON-NLS-1$
    select.addSymbol(new ElementSymbol("a.g1.c1")); //$NON-NLS-1$
            
    Query query = new Query();

View Full Code Here

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant("abc"))); //$NON-NLS-1$ //$NON-NLS-2$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

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    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant("O'Leary"))); //$NON-NLS-1$ //$NON-NLS-2$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

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    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant("'abc'"))); //$NON-NLS-1$ //$NON-NLS-2$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

View Full Code Here

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant("a'b'c"))); //$NON-NLS-1$ //$NON-NLS-2$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

View Full Code Here

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant(new Long(123456789012L)))); //$NON-NLS-1$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

View Full Code Here

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant(new BigInteger("1000000000000000000000000")))); //$NON-NLS-1$ //$NON-NLS-2$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

View Full Code Here

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant(new Double(1.3e8)))); //$NON-NLS-1$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

View Full Code Here

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant(new Double(-1.3e-6)))); //$NON-NLS-1$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

View Full Code Here

    GroupSymbol g = new GroupSymbol("a.g1"); //$NON-NLS-1$
    From from = new From();
    from.addGroup(g);


    Select select = new Select();
    select.addSymbol(new ExpressionSymbol("expr", new Constant(new Double(-1.3e+8)))); //$NON-NLS-1$
            
    Query query = new Query();
    query.setSelect(select);
    query.setFrom(from);

View Full Code Here

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Related Classes of org.teiid.query.sql.symbol.ExpressionSymbol

org.teiid.dqp.internal.process.multisource.MultiSourcePlanToProcessConverter

org.teiid.query.eval.Evaluator

org.teiid.query.optimizer.relational.AliasGenerator

org.teiid.query.optimizer.relational.rules.RuleAssignOutputElements

org.teiid.query.optimizer.relational.rules.RuleChooseJoinStrategy

org.teiid.query.optimizer.relational.rules.RuleCollapseSource

org.teiid.query.optimizer.relational.rules.RulePlanSorts

org.teiid.query.optimizer.relational.rules.RulePushAggregates

org.teiid.query.optimizer.relational.rules.TestCapabilitiesUtil

org.teiid.query.optimizer.TriggerActionPlanner

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