org.hibernate.loader.plan.build.spi

Class QuerySpaceTreePrinter

java.lang.Object

org.hibernate.loader.plan.build.spi.QuerySpaceTreePrinter

public class QuerySpaceTreePrinter
extends Object

Prints a QuerySpaces graph as a tree structure.

Intended for use in debugging, logging, etc.

Author:

Steve Ebersole

Field Summary

Fields

Modifier and Type	Field and Description
static QuerySpaceTreePrinter	INSTANCE Singleton access

Method Summary

Modifier and Type	Method and Description
String	asString(QuerySpaces spaces, AliasResolutionContext aliasResolutionContext) Returns a String containing the QuerySpaces graph as a tree structure.
String	asString(QuerySpaces spaces, int depth, AliasResolutionContext aliasResolutionContext) Returns a String containing the QuerySpaces graph as a tree structure, starting at a particular depth.
String	extractDetails(QuerySpace space) Returns a String containing high-level details about the QuerySpace, such as: query space class name unique ID entity name (for EntityQuerySpace collection role (for CollectionQuerySpace *
void	write(QuerySpaces spaces, int depth, AliasResolutionContext aliasResolutionContext, PrintStream printStream) Returns a String containing the QuerySpaces graph as a tree structure, starting at a particular depth.
void	write(QuerySpaces spaces, int depth, AliasResolutionContext aliasResolutionContext, PrintWriter printWriter) Returns a String containing the QuerySpaces graph as a tree structure, starting at a particular depth.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final QuerySpaceTreePrinter INSTANCE

Singleton access

Method Detail

asString

public String asString(QuerySpaces spaces,
                       AliasResolutionContext aliasResolutionContext)

Returns a String containing the QuerySpaces graph as a tree structure.

Parameters:

spaces - The QuerySpaces object.

aliasResolutionContext - The context for resolving table and column aliases for the QuerySpace references in spaces; if null, table and column aliases are not included in returned value..

Returns:

the String containing the QuerySpaces graph as a tree structure.

asString

public String asString(QuerySpaces spaces,
                       int depth,
                       AliasResolutionContext aliasResolutionContext)

Returns a String containing the QuerySpaces graph as a tree structure, starting at a particular depth. The value for depth indicates the number of indentations that will prefix all lines in the returned String. Root query spaces will be written with depth + 1 and the depth will be further incremented as joined query spaces are traversed. An indentation is defined as the number of characters defined by TreePrinterHelper.INDENTATION.

Parameters:

spaces - The QuerySpaces object.

depth - The intial number of indentations

aliasResolutionContext - The context for resolving table and column aliases for the QuerySpace references in spaces; if null, table and column aliases are not included in returned value..

Returns:

the String containing the QuerySpaces graph as a tree structure.

write

public void write(QuerySpaces spaces,
                  int depth,
                  AliasResolutionContext aliasResolutionContext,
                  PrintStream printStream)

Returns a String containing the QuerySpaces graph as a tree structure, starting at a particular depth. The value for depth indicates the number of indentations that will prefix all lines in the returned String. Root query spaces will be written with depth + 1 and the depth will be further incremented as joined query spaces are traversed. An indentation is defined as the number of characters defined by TreePrinterHelper.INDENTATION.

Parameters:

spaces - The QuerySpaces object.

depth - The intial number of indentations

aliasResolutionContext - The context for resolving table and column aliases for the QuerySpace references in spaces; if null, table and column aliases are not included in returned value.

printStream - The print stream for writing.

write

public void write(QuerySpaces spaces,
                  int depth,
                  AliasResolutionContext aliasResolutionContext,
                  PrintWriter printWriter)

Returns a String containing the QuerySpaces graph as a tree structure, starting at a particular depth. The value for depth indicates the number of indentations that will prefix all lines in the returned String. Root query spaces will be written with depth + 1 and the depth will be further incremented as joined query spaces are traversed. An indentation is defined as the number of characters defined by TreePrinterHelper.INDENTATION.

Parameters:

spaces - The QuerySpaces object.

depth - The intial number of indentations

aliasResolutionContext - The context for resolving table and column aliases for the QuerySpace references in spaces; if null, table and column aliases are not included in returned value.

printWriter - The print writer for writing.

extractDetails

public String extractDetails(QuerySpace space)

Returns a String containing high-level details about the QuerySpace, such as:

• query space class name
• unique ID
• entity name (for EntityQuerySpace
• collection role (for CollectionQuerySpace
*

Parameters:

space - The query space

Returns:

a String containing details about the QuerySpace