org.apache.hadoop.hive.ql.hooks
Class VerifyHooksRunInOrder.RunSecondSemanticAnalysisHook

java.lang.Object
  org.apache.hadoop.hive.ql.parse.AbstractSemanticAnalyzerHook
      org.apache.hadoop.hive.ql.hooks.VerifyHooksRunInOrder.RunSecondSemanticAnalysisHook

All Implemented Interfaces:

Hook, HiveSemanticAnalyzerHook

Enclosing class:

VerifyHooksRunInOrder

public static class VerifyHooksRunInOrder.RunSecondSemanticAnalysisHook
extends AbstractSemanticAnalyzerHook

Constructor Summary

VerifyHooksRunInOrder.RunSecondSemanticAnalysisHook()

Method Summary

void	postAnalyze(HiveSemanticAnalyzerHookContext context, List<Task<? extends Serializable>> rootTasks) Invoked after Hive performs its own semantic analysis on a statement (including optimization).
ASTNode	preAnalyze(HiveSemanticAnalyzerHookContext context, ASTNode ast) Invoked before Hive performs its own semantic analysis on a statement.

Methods inherited from class java.lang.Object

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

Constructor Detail

VerifyHooksRunInOrder.RunSecondSemanticAnalysisHook

public VerifyHooksRunInOrder.RunSecondSemanticAnalysisHook()

Method Detail

preAnalyze

public ASTNode preAnalyze(HiveSemanticAnalyzerHookContext context,
                          ASTNode ast)
                   throws SemanticException

Description copied from interface: HiveSemanticAnalyzerHook

Invoked before Hive performs its own semantic analysis on a statement. The implementation may inspect the statement AST and prevent its execution by throwing a SemanticException. Optionally, it may also augment/rewrite the AST, but must produce a form equivalent to one which could have been returned directly from Hive's own parser.

Specified by:

preAnalyze in interface HiveSemanticAnalyzerHook

Overrides:

preAnalyze in class AbstractSemanticAnalyzerHook

Parameters:

context - context information for semantic analysis

ast - AST being analyzed and optionally rewritten

Returns:

replacement AST (typically the same as the original AST unless the entire tree had to be replaced; must not be null)

Throws:

SemanticException

postAnalyze

public void postAnalyze(HiveSemanticAnalyzerHookContext context,
                        List<Task<? extends Serializable>> rootTasks)
                 throws SemanticException

Description copied from interface: HiveSemanticAnalyzerHook

Invoked after Hive performs its own semantic analysis on a statement (including optimization). Hive calls postAnalyze on the same hook object as preAnalyze, so the hook can maintain state across the calls.

Specified by:

postAnalyze in interface HiveSemanticAnalyzerHook

Overrides:

postAnalyze in class AbstractSemanticAnalyzerHook

Parameters:

context - context information for semantic analysis

rootTasks - root tasks produced by semantic analysis; the hook is free to modify this list or its contents

Throws:

SemanticException