org.apache.hadoop.hive.ql.parse
Class TypeCheckProcFactory.DefaultExprProcessor
java.lang.Object
org.apache.hadoop.hive.ql.parse.TypeCheckProcFactory.DefaultExprProcessor
- All Implemented Interfaces:
- NodeProcessor
- Enclosing class:
- TypeCheckProcFactory
public static class TypeCheckProcFactory.DefaultExprProcessor
- extends Object
- implements NodeProcessor
The default processor for typechecking.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TypeCheckProcFactory.DefaultExprProcessor
public TypeCheckProcFactory.DefaultExprProcessor()
isRedundantConversionFunction
public static boolean isRedundantConversionFunction(ASTNode expr,
boolean isFunction,
ArrayList<ExprNodeDesc> children)
getFunctionText
public static String getFunctionText(ASTNode expr,
boolean isFunction)
getFuncExprNodeDesc
public static ExprNodeDesc getFuncExprNodeDesc(String udfName,
ExprNodeDesc... children)
throws UDFArgumentException
- This function create an ExprNodeDesc for a UDF function given the
children (arguments). It will insert implicit type conversion functions
if necessary.
- Throws:
UDFArgumentException
process
public Object process(Node nd,
Stack<Node> stack,
NodeProcessorCtx procCtx,
Object... nodeOutputs)
throws SemanticException
- Description copied from interface:
NodeProcessor
- Generic process for all ops that don't have specific implementations.
- Specified by:
process
in interface NodeProcessor
- Parameters:
nd
- operator to processprocCtx
- operator processor contextnodeOutputs
- A variable argument list of outputs from other nodes in the walk
- Returns:
- Object to be returned by the process call
- Throws:
SemanticException
Copyright © 2011 The Apache Software Foundation