Examples of FunctionMethod

org.teiid.metadata.FunctionMethod

This class represents information about a particular function signature. Function signatures are unique with respect to their name, # of arguments, and type of arguments. Return type and argument names are not uniqueness factors. This class makes no attempt to validate the data put into it, particularly with respect to null values. The {@link FunctionMetadataValidator} can be used to validate this object.

Attributes:

name - Name of the function
description - Description of the function
category - Function category containing this function
pushdown - Determine whether this function can, cannot, or must be pushed down to a source
invocationClass - Class containing method implementing this function
invocationMethod - Method implementing this function
inputParameters - 0 or more input parameters
outputParameter - 1 output parameter
determinism - specifies whether the function is deterministic or not. Various levels are provided
nullOnNull - Specifies whether the function is called if any of the input arguments is null. The result is the null value.

@see FunctionParameter

org.teiid.query.function.metadata.FunctionMethod

@see FunctionMetadataValidator @see FunctionCategoryConstants

    }
    
    private void addRowLimitExceptionFunctions() {
      for (String exprType : DataTypeManager.getAllDataTypeNames()) {
            functions.add(
                    new FunctionMethod("rowlimitexception", QueryPlugin.Util.getString("SystemSource.RowlimitException_desc"), MISCELLANEOUS, FUNCTION_CLASS, "rowlimitexception", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
                        new FunctionParameter[] {
                            new FunctionParameter("element", exprType, QueryPlugin.Util.getString("SystemSource.Rowlimit_arg1")) }, //$NON-NLS-1$ //$NON-NLS-2$
                        new FunctionParameter("result", DataTypeManager.DefaultDataTypes.INTEGER, QueryPlugin.Util.getString("SystemSource.Rowlimit_result")) ) );                     //$NON-NLS-1$ //$NON-NLS-2$
      }
    }

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.

Examples of FunctionMethod

Examples of org.teiid.query.function.metadata.FunctionMethod