org.apache.hadoop.hive.ql.parse.type

Class ExprNodeTypeCheck

java.lang.Object

org.apache.hadoop.hive.ql.parse.type.ExprNodeTypeCheck

public class ExprNodeTypeCheck
extends Object

Class with utility methods to use typecheck processor factory functionality.

Method Summary

Modifier and Type	Method and Description
static ExprNodeDesc	genConstraintsExpr(HiveConf conf, Table targetTable, boolean updateStatement, RowResolver inputRR)
static Map<ASTNode,ExprNodeDesc>	genExprNode(ASTNode expr, TypeCheckCtx tcCtx) Given an AST expression and a context, it will produce a map from AST nodes to Hive ExprNode.
static Map<ASTNode,ExprNodeDesc>	genExprNodeJoinCond(ASTNode expr, TypeCheckCtx tcCtx) Given an AST join expression and a context, it will produce a map from AST nodes to Hive ExprNode.
static TypeCheckProcFactory.DefaultExprProcessor	getExprNodeDefaultExprProcessor() Returns the default processor to generate Hive ExprNode from AST nodes.
static ExprNodeDesc	toExprNode(ColumnInfo columnInfo, RowResolver rowResolver) Transforms column information into the corresponding Hive ExprNode.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

genExprNode

public static Map<ASTNode,ExprNodeDesc> genExprNode(ASTNode expr,
                                                    TypeCheckCtx tcCtx)
                                             throws SemanticException

Given an AST expression and a context, it will produce a map from AST nodes to Hive ExprNode.

Throws:

SemanticException

genExprNodeJoinCond

public static Map<ASTNode,ExprNodeDesc> genExprNodeJoinCond(ASTNode expr,
                                                            TypeCheckCtx tcCtx)
                                                     throws SemanticException

Given an AST join expression and a context, it will produce a map from AST nodes to Hive ExprNode.

Throws:

SemanticException

getExprNodeDefaultExprProcessor

public static TypeCheckProcFactory.DefaultExprProcessor getExprNodeDefaultExprProcessor()

Returns the default processor to generate Hive ExprNode from AST nodes.

toExprNode

public static ExprNodeDesc toExprNode(ColumnInfo columnInfo,
                                      RowResolver rowResolver)
                               throws SemanticException

Transforms column information into the corresponding Hive ExprNode.

Throws:

SemanticException

genConstraintsExpr

public static ExprNodeDesc genConstraintsExpr(HiveConf conf,
                                              Table targetTable,
                                              boolean updateStatement,
                                              RowResolver inputRR)
                                       throws SemanticException

Throws:

SemanticException