Examples of org.teiid.query.processor.xml.XMLContext

org.teiid.query.processor.xml.XMLContext
A XML context is an object which is passed between all the xml processing instructions. context will have all the information possible for the block instructions to execute. It will also have access to the parent context, however it will not have information on the sibiling blocks.

public class TestXMLContext extends TestCase {
    static String resultSetName = "ResultSet"; //$NON-NLS-1$
    
    public void testGetCurrentRow() throws Exception{


        XMLContext context = new XMLContext();
        
        List[] rows = new List[] { 
             Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Screwdriver", new Integer(100), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Goat", new Integer(4), null } )         //$NON-NLS-1$
        };
        
        FakePlanExecutor executor = new FakePlanExecutor(resultSetName, rows);
        context.setResultSet(resultSetName, executor);
        
        List currentRow = context.getCurrentRow(resultSetName);


        // this is only behaviour of the Fake Plan executor
        assertNull(currentRow);
        
        // move cursor forward
        currentRow = context.getNextRow(resultSetName);
        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), currentRow); //$NON-NLS-1$
        
        // check the cursor again should be same as previous.
        currentRow = context.getCurrentRow(resultSetName);
        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), currentRow); //$NON-NLS-1$
        
        // check the cursor 2nd again, make sure it is not moved
        currentRow = context.getCurrentRow(resultSetName);
        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), currentRow); //$NON-NLS-1$
        
        // test remove
        context.removeResultSet(resultSetName);
        try {
            currentRow = context.getCurrentRow(resultSetName);
            fail("must have failed because the results are removed."); //$NON-NLS-1$
        }catch(TeiidComponentException e) {
        }
    }

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    }    
    
        
    public void testGetCurrentRows() throws Exception{
        
        XMLContext parentContext = new XMLContext();
        XMLContext childContext = new XMLContext(parentContext);
        
        List[] rows1 = new List[] { 
             Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Screwdriver", new Integer(100), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Goat", new Integer(4), null } )         //$NON-NLS-1$
        };       
        
        List[] rows2 = new List[] { 
             Arrays.asList( new Object[] { "Lamp2", new Integer(54), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Screwdriver2", new Integer(1000), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Goat2", new Integer(43), null } )         //$NON-NLS-1$
        };       
        String results1= "resultsOne"; //$NON-NLS-1$
        String results2= "resultsTwo"; //$NON-NLS-1$
        
        FakePlanExecutor executor = new FakePlanExecutor(results1, rows1);
        parentContext.setResultSet(results1, executor);
        parentContext.getNextRow(results1);


        executor = new FakePlanExecutor(results2, rows2);
        childContext.setResultSet(results2, executor);
        childContext.getNextRow(results2);


        // make sure parent context dos not have access to the child's results
        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), parentContext.getCurrentRow(results1)); //$NON-NLS-1$
        try {
            parentContext.getCurrentRow(results2);
            fail("should fail to get child contexts results from parent.."); //$NON-NLS-1$
        } catch (TeiidComponentException e) {
        } 
        
        // note that we only using the current context which is the "child"
        // here we should have access to both parent and child's reslt sets.
        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), childContext.getCurrentRow(results1)); //$NON-NLS-1$
        assertEquals(Arrays.asList( new Object[] { "Lamp2", new Integer(54), null } ), childContext.getCurrentRow(results2)); //$NON-NLS-1$


        // move the child context result and make sure parent context result stays same
        childContext.getNextRow(results2);
        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), childContext.getCurrentRow(results1)); //$NON-NLS-1$        
        assertEquals(Arrays.asList( new Object[] { "Screwdriver2", new Integer(1000), null } ), childContext.getCurrentRow(results2)); //$NON-NLS-1$        
    }

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        assertEquals(Arrays.asList( new Object[] { "Screwdriver2", new Integer(1000), null } ), childContext.getCurrentRow(results2)); //$NON-NLS-1$        
    }     
    
    public void testGetCurrentRowRecursive() throws Exception{
        
        XMLContext parentContext = new XMLContext();
        XMLContext childContext = new XMLContext(parentContext);
        
        List[] rows1 = new List[] { 
             Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Screwdriver", new Integer(100), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Goat", new Integer(4), null } )         //$NON-NLS-1$
        };       
        
        List[] rows2 = new List[] { 
             Arrays.asList( new Object[] { "Lamp2", new Integer(54), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Screwdriver2", new Integer(1000), null } ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Goat2", new Integer(43), null } )         //$NON-NLS-1$
        };       
        
        FakePlanExecutor executor = new FakePlanExecutor(resultSetName, rows1);
        parentContext.setResultSet(resultSetName, executor);
        parentContext.getNextRow(resultSetName);


        // know here that 'FakeName' is a different result set for the recursive node
        // and you should be able to retrive rows using both 'FakeName' and realname
        executor = new FakePlanExecutor("FakeName", rows2); //$NON-NLS-1$
        childContext.setResultSet(resultSetName, executor); 
        childContext.getNextRow(resultSetName);


        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), parentContext.getCurrentRow(resultSetName)); //$NON-NLS-1$
        assertEquals(Arrays.asList( new Object[] { "Lamp2", new Integer(54), null } ), childContext.getCurrentRow(resultSetName)); //$NON-NLS-1$
    }

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        assertEquals(Arrays.asList( new Object[] { "Lamp", new Integer(5), null } ), parentContext.getCurrentRow(resultSetName)); //$NON-NLS-1$
        assertEquals(Arrays.asList( new Object[] { "Lamp2", new Integer(54), null } ), childContext.getCurrentRow(resultSetName)); //$NON-NLS-1$
    }    
    
    public void testGetReferenceValues() throws Exception {
        XMLContext context = new XMLContext();
        String FOO = "Foo"; //$NON-NLS-1$
        String BAR = "Bar"; //$NON-NLS-1$
        
        ElementSymbol X = new ElementSymbol("Foo.X"); //$NON-NLS-1$
        ElementSymbol Y = new ElementSymbol("Foo.Y"); //$NON-NLS-1$


        GroupSymbol Foo = new GroupSymbol(FOO); 
        X.setGroupSymbol(Foo);
        Y.setGroupSymbol(Foo);


        ElementSymbol AX = new ElementSymbol("Bar.X"); //$NON-NLS-1$
        ElementSymbol AY = new ElementSymbol("Bar.Y"); //$NON-NLS-1$


        GroupSymbol Bar = new GroupSymbol(BAR); 
        AX.setGroupSymbol(Bar);
        AY.setGroupSymbol(Bar);


        List fooSchema = Arrays.asList( new Object[] {X, Y});
        List barSchema = Arrays.asList( new Object[] {AX,AY}); 
        
        List[] fooRows = new List[] { 
             Arrays.asList( new Object[] { "Lamp", new Integer(5)} ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Screwdriver", new Integer(100)} ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Goat", new Integer(4) } )         //$NON-NLS-1$
        };       
        
        List[] barRows = new List[] { 
             Arrays.asList( new Object[] { "Lamp2", new Integer(54)} ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Screwdriver2", new Integer(1000)} ),         //$NON-NLS-1$
             Arrays.asList( new Object[] { "Goat2", new Integer(43)} )         //$NON-NLS-1$
        };       
        
        FakePlanExecutor executorFoo = new FakePlanExecutor(FOO, fooSchema, fooRows); 
        context.setResultSet(FOO, executorFoo);
        context.setVariableValues(FOO, context.getNextRow(FOO));
        
        XMLContext childContext = new XMLContext(context);
        
        FakePlanExecutor executorBar = new FakePlanExecutor(BAR, barSchema, barRows); 
        childContext.setResultSet(FOO, executorBar); 
        childContext.setVariableValues(FOO, childContext.getNextRow(FOO));
        
        // THIS is the TEST.. we need the Foo elements with Bar values 
        Map referenceValues = childContext.getReferenceValues();
        assertEquals(2, referenceValues.size());
        
        assertEquals("Lamp2", referenceValues.get(X)); //$NON-NLS-1$
        assertEquals(new Integer(54), referenceValues.get(Y)); 
        
        // advance BAR and get new results for the references.
        childContext.setVariableValues(FOO, childContext.getNextRow(FOO));
        referenceValues = childContext.getReferenceValues();
        assertEquals("Screwdriver2", referenceValues.get(X)); //$NON-NLS-1$
        assertEquals(new Integer(1000), referenceValues.get(Y)); 
    }

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     * Program.  Implicit in this test is that the program counter
     * is separate from the two occurances of the p1 instance. 
     * @throws Exception
     */
    public void testGetCurrentInstruction() throws Exception {
        XMLContext context = new XMLContext();
        NoOpInstruction i1 = new NoOpInstruction();
        NoOpInstruction i2 = new NoOpInstruction();
        NoOpInstruction i3 = new NoOpInstruction();
        NoOpInstruction i4 = new NoOpInstruction();
        Program p1 = new Program();

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     * Program.  Implicit in this test is that the program counter
     * is separate from the two occurances of the p1 instance. 
     * @throws Exception
     */
    public void testGetCurrentInstruction2() throws Exception {
        XMLContext context = new XMLContext();
        NoOpInstruction i1 = new NoOpInstruction();
        NoOpInstruction i2 = new NoOpInstruction();
        NoOpInstruction i3 = new NoOpInstruction();
        NoOpInstruction i4 = new NoOpInstruction();
        Program p1 = new Program();

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    /**
     * Test that doc instructions don't do anything while
     * recursion is going on. 
     */
    public void testInitializeDocInstruction() throws Exception {
        XMLContext context = new XMLContext();
        Program p0 = new Program();
        InitializeDocumentInstruction i1 = new InitializeDocumentInstruction();
        Program p1 = new Program();
        p1.addInstruction(i1);

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    /**
     * Test that doc instructions don't do anything while
     * recursion is going on. 
     */
    public void testInitializeDocInstruction2() throws Exception {
        XMLContext context = new XMLContext();
        Program p0 = new Program();
        InitializeDocumentInstruction i1 = new InitializeDocumentInstruction();
        Program p1 = new Program();
        p1.addInstruction(i1);

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org.teiid.query.processor.xml.TestProcessorEnvironment

org.teiid.query.processor.xml.TestXMLContext

org.teiid.query.sql.symbol.ElementSymbol

java.util.List

java.util.HashMap

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