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

org.teiid.query.sql.symbol.ElementSymbol

This is a subclass of Symbol representing a single element. An ElementSymbol also is an expression and thus has a type. Element symbols have a variety of attributes that determine how they are displayed - a flag for displaying fully qualified and an optional vdb name.

The "isExternalReference" property indicates whether the element symbol refers to an element from a group outside the current command. Typically this is set to false. Common uses when this is set to true are for variables used within a command, correlated elements within a command, etc.

        assertEquals("FakeRelationalNode", fakeNode.getDescriptionProperties().getName()); //$NON-NLS-1$
    }
    
    private FakeRelationalNode createFakeNode(List[] data) {
        // setup 
        ElementSymbol element = new ElementSymbol("a"); //$NON-NLS-1$
        element.setType(DataTypeManager.DefaultDataClasses.INTEGER);
        List elements = new ArrayList();
        elements.add(element);
        
        FakeRelationalNode fakeNode = new FakeRelationalNode(1, data, 100);
        fakeNode.setElements(elements);

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        assertEquals("Didn't match expected counts", expected.length, currentRow-1); //$NON-NLS-1$
    }
    
    @Test public void testNoRows() throws TeiidComponentException, TeiidProcessingException {
        ElementSymbol es1 = new ElementSymbol("e1"); //$NON-NLS-1$
        es1.setType(DataTypeManager.DefaultDataClasses.INTEGER);


        ElementSymbol es2 = new ElementSymbol("e2"); //$NON-NLS-1$
        es2.setType(DataTypeManager.DefaultDataClasses.INTEGER);


        List leftElements = new ArrayList();
        leftElements.add(es1);
        RelationalNode leftNode = new FakeRelationalNode(1, new List[0]);
        leftNode.setElements(leftElements);

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        helpTestUnion(new RelationalNode[] {leftNode, rightNode}, union, new List[0]);        
    }


    public void helpTestUnionConfigs(int sources, int blockModIndex, int rowsPerSource, int batchSize, List[] expected) throws TeiidComponentException, TeiidProcessingException {
        ElementSymbol es1 = new ElementSymbol("e1"); //$NON-NLS-1$
        es1.setType(DataTypeManager.DefaultDataClasses.INTEGER);


        ElementSymbol es2 = new ElementSymbol("e2"); //$NON-NLS-1$
        es2.setType(DataTypeManager.DefaultDataClasses.INTEGER);


        RelationalNode[] nodes = new RelationalNode[sources];
        for(int i=0; i<nodes.length; i++) {
            List childElements = new ArrayList();
            childElements.add(es1);

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        BasicSourceCapabilities caps = new BasicSourceCapabilities();
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_COUNT, false);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_COUNT_STAR, true);
        
        AggregateSymbol aggregate = new AggregateSymbol("expr", NonReserved.COUNT, false, new ElementSymbol("x")); //$NON-NLS-1$ //$NON-NLS-2$
        
        helpTestSupportsAggregateFunction(caps, aggregate, false); 
    }

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        BasicSourceCapabilities caps = new BasicSourceCapabilities();
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_COUNT, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_COUNT_STAR, false);
        
        AggregateSymbol aggregate = new AggregateSymbol("expr", NonReserved.COUNT, false, new ElementSymbol("x")); //$NON-NLS-1$ //$NON-NLS-2$
        
        helpTestSupportsAggregateFunction(caps, aggregate, true); 
    }

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    public void testSupportsAggregate7() throws Exception {        
        BasicSourceCapabilities caps = new BasicSourceCapabilities();
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_SUM, false);
        
        AggregateSymbol aggregate = new AggregateSymbol("expr", NonReserved.SUM, false, new ElementSymbol("x")); //$NON-NLS-1$ //$NON-NLS-2$
        
        helpTestSupportsAggregateFunction(caps, aggregate, false); 
    }

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    public void testSupportsAggregate8() throws Exception {        
        BasicSourceCapabilities caps = new BasicSourceCapabilities();
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_SUM, true);
        
        AggregateSymbol aggregate = new AggregateSymbol("expr", NonReserved.SUM, false, new ElementSymbol("x")); //$NON-NLS-1$ //$NON-NLS-2$
        
        helpTestSupportsAggregateFunction(caps, aggregate, true); 
    }

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    public void testSupportsAggregate9() throws Exception {        
        BasicSourceCapabilities caps = new BasicSourceCapabilities();
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_AVG, false);
        
        AggregateSymbol aggregate = new AggregateSymbol("expr", NonReserved.AVG, false, new ElementSymbol("x")); //$NON-NLS-1$ //$NON-NLS-2$
        
        helpTestSupportsAggregateFunction(caps, aggregate, false); 
    }

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    public void testSupportsAggregate10() throws Exception {        
        BasicSourceCapabilities caps = new BasicSourceCapabilities();
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_AVG, true);
        
        AggregateSymbol aggregate = new AggregateSymbol("expr", NonReserved.AVG, false, new ElementSymbol("x")); //$NON-NLS-1$ //$NON-NLS-2$
        
        helpTestSupportsAggregateFunction(caps, aggregate, true); 
    }

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    public void testSupportsAggregate11() throws Exception {        
        BasicSourceCapabilities caps = new BasicSourceCapabilities();
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES, true);
        caps.setCapabilitySupport(Capability.QUERY_AGGREGATES_MIN, false);
        
        AggregateSymbol aggregate = new AggregateSymbol("expr", NonReserved.MIN, false, new ElementSymbol("x")); //$NON-NLS-1$ //$NON-NLS-2$
        
        helpTestSupportsAggregateFunction(caps, aggregate, false); 
    }

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