org.teiid.query.sql.proc

Class Block

java.lang.Object

org.teiid.query.sql.proc.Statement

org.teiid.query.sql.proc.Block

All Implemented Interfaces:

Cloneable, LanguageObject, Statement.Labeled

public class Block
extends Statement
implements Statement.Labeled

This class represents a group of Statement objects. The statements are stored on this object in the order in which they are added.

Nested Class Summary

Nested classes/interfaces inherited from class org.teiid.query.sql.proc.Statement

Statement.Labeled

Nested classes/interfaces inherited from interface org.teiid.query.sql.LanguageObject

LanguageObject.Util

Field Summary

Fields inherited from class org.teiid.query.sql.proc.Statement

TYPE_ASSIGNMENT, TYPE_BREAK, TYPE_COMMAND, TYPE_COMPOUND, TYPE_CONTINUE, TYPE_DECLARE, TYPE_ERROR, TYPE_IF, TYPE_LEAVE, TYPE_LOOP, TYPE_RETURN, TYPE_UNKNOWN, TYPE_UPDATE, TYPE_WHILE

Constructor Summary

Constructors

Constructor and Description
Block() Constructor for Block.
Block(Statement statement) Constructor for Block with a single Statement.

Method Summary

Modifier and Type	Method and Description
void	acceptVisitor(LanguageVisitor visitor) Method for accepting a visitor.
void	addStatement(Statement statement) Add a Statement to this block.
void	addStatement(Statement statement, boolean exception)
Block	clone() Deep clone statement to produce a new identical block.
boolean	equals(Object obj) Compare two queries for equality.
String	getExceptionGroup()
List<Statement>	getExceptionStatements()
String	getLabel()
List<Statement>	getStatements() Get all the statements contained on this block.
int	getType() Return type of statement to make it easier to build switch statements by statement type.
int	hashCode() Get hashcode for block.
boolean	isAtomic()
void	setAtomic(boolean atomic)
void	setExceptionGroup(String exceptionGroup)
void	setExceptionStatements(List<Statement> exceptionStatements)
void	setLabel(String label)
void	setStatements(List<Statement> statements) Set the statements contained on this block.
String	toString() Returns a string representation of an instance of this class.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Block

public Block()

Constructor for Block.

Block

public Block(Statement statement)

Constructor for Block with a single Statement.

Parameters:

statement - The Statement to be added to the block

Method Detail

getLabel

public String getLabel()

Specified by:

getLabel in interface Statement.Labeled

setLabel

public void setLabel(String label)

Specified by:

setLabel in interface Statement.Labeled

getStatements

public List<Statement> getStatements()

Get all the statements contained on this block.

Returns:

A list of Statements contained in this block

setStatements

public void setStatements(List<Statement> statements)

Set the statements contained on this block.

Parameters:

statements - A list of Statements contained in this block

addStatement

public void addStatement(Statement statement)

Add a Statement to this block.

Parameters:

statement - The Statement to be added to the block

addStatement

public void addStatement(Statement statement,
                         boolean exception)

acceptVisitor

public void acceptVisitor(LanguageVisitor visitor)

Description copied from interface: LanguageObject

Method for accepting a visitor. It is the responsibility of the language object to call back on the visitor.

Specified by:

acceptVisitor in interface LanguageObject

Parameters:

visitor - Visitor being used

clone

public Block clone()

Deep clone statement to produce a new identical block.

Specified by:

clone in interface LanguageObject

Specified by:

clone in class Statement

Returns:

Deep clone

equals

public boolean equals(Object obj)

Compare two queries for equality. Blocks will only evaluate to equal if they are IDENTICAL: statements in the block are equal and are in the same order.

Overrides:

equals in class Object

Parameters:

obj - Other object

Returns:

True if equal

hashCode

public int hashCode()

Get hashcode for block. WARNING: This hash code relies on the hash codes of the statements present in the block. If statements are added to the block or if statements on the block change the hash code will change. Hash code is only valid after the block has been completely constructed.

Overrides:

hashCode in class Object

Returns:

Hash code

toString

public String toString()

Returns a string representation of an instance of this class.

Overrides:

toString in class Statement

Returns:

String representation of object

isAtomic

public boolean isAtomic()

setAtomic

public void setAtomic(boolean atomic)

getType

public int getType()

Description copied from class: Statement

Return type of statement to make it easier to build switch statements by statement type.

Specified by:

getType in class Statement

Returns:

Type from TYPE constants

getExceptionGroup

public String getExceptionGroup()

setExceptionGroup

public void setExceptionGroup(String exceptionGroup)

getExceptionStatements

public List<Statement> getExceptionStatements()

setExceptionStatements

public void setExceptionStatements(List<Statement> exceptionStatements)