Examples of org.teiid.query.function.FunctionLibrary.findFunction()

Class org.teiid.query.function.FunctionLibrary

Examples of org.teiid.query.function.FunctionLibrary.findFunction()

org.teiid.query.function.FunctionLibrary.findFunction()
Find a function descriptor given a name and the types of the arguments. This method matches based on case-insensitive function name and an exact match of the number and types of parameter arguments. @param name Name of the function to resolve @param types Array of classes representing the types @return Descriptor if found, null if not found

        break;
      }
      case 8:
      case 9: {
        FunctionDescriptor descriptor = 
          funcLibrary.findFunction(SourceSystemFunctions.FORMATTIMESTAMP, new Class[] { DataTypeManager.DefaultDataClasses.TIMESTAMP, DataTypeManager.DefaultDataClasses.STRING });
        function.setName(SourceSystemFunctions.FORMATTIMESTAMP);
        function.setFunctionDescriptor(descriptor);
        function.getArgs()[0] = ResolverUtil.getConversion(function.getArg(0), DataTypeManager.getDataTypeName(function.getArg(0).getType()), DataTypeManager.DefaultDataTypes.TIMESTAMP, false, funcLibrary);
        break;
      }

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        Class srcType = DataTypeManager.DefaultDataClasses.STRING;
        String tgtTypeName = DataTypeManager.DefaultDataTypes.DATE;
        Expression expression = new Constant("2003-02-27"); //$NON-NLS-1$
        
    FunctionLibrary library = FakeMetadataFactory.SFM.getSystemFunctionLibrary();                         
    FunctionDescriptor fd = library.findFunction(FunctionLibrary.CONVERT, new Class[] { srcType, DataTypeManager.DefaultDataClasses.STRING });


    Function conversion = new Function(fd.getName(), new Expression[] { expression, new Constant(tgtTypeName) });
    conversion.setType(DataTypeManager.getDataTypeClass(tgtTypeName));
    conversion.setFunctionDescriptor(fd);
    conversion.makeImplicit();

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    Class srcType = DataTypeManager.DefaultDataClasses.STRING;
    String tgtTypeName = DataTypeManager.DefaultDataTypes.DATE;
    Expression expression = new Constant("2003-02-27"); //$NON-NLS-1$
        
    FunctionLibrary library = FakeMetadataFactory.SFM.getSystemFunctionLibrary();                        
    FunctionDescriptor fd = library.findFunction(FunctionLibrary.CONVERT, new Class[] { srcType, DataTypeManager.DefaultDataClasses.STRING });


    Function conversion = new Function(fd.getName(), new Expression[] { expression, new Constant(tgtTypeName) });
    conversion.setType(DataTypeManager.getDataTypeClass(tgtTypeName));
    conversion.setFunctionDescriptor(fd);
    conversion.makeImplicit();

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    @Test public void testUser() {
        //String sql = "select intkey from SmallA where user() = 'bqt2'";


        // Expected left expression
        FunctionLibrary library = FakeMetadataFactory.SFM.getSystemFunctionLibrary();                          
        FunctionDescriptor fd = library.findFunction(FunctionLibrary.USER, new Class[] { });
        Function user = new Function(fd.getName(), new Expression[] {});
        user.setFunctionDescriptor(fd);


        // Expected criteria
        CompareCriteria expected = new CompareCriteria();

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