org.teiid.query.sql.proc
Class CriteriaSelector

java.lang.Object
  org.teiid.query.sql.proc.CriteriaSelector

All Implemented Interfaces:

java.lang.Cloneable, LanguageObject

public class CriteriaSelector
extends java.lang.Object
implements LanguageObject

This class represents the criteria present on the user's query. The type of criteria and the elements on which it is specified are listed in this object, this object is used by HasCriteria and TranslateCriteria objects to determine if a particular type of criteria is present on one or more elements on a user's query

Nested Class Summary

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

LanguageObject.Util

Field Summary

static int	BETWEEN
static int	COMPARE_EQ
static int	COMPARE_GE
static int	COMPARE_GT
static int	COMPARE_LE
static int	COMPARE_LT
static int	COMPARE_NE
static int	IN
static int	IS_NULL
static int	LIKE
static int	NO_TYPE

Constructor Summary

CriteriaSelector()
Constructor for CriteriaSelector.

CriteriaSelector(int selectorType, java.util.List elements)
Constructor for CriteriaSelector.

Method Summary

void	acceptVisitor(LanguageVisitor visitor) Method for accepting a visitor.
void	addElement(ElementSymbol element) Add an element to the collection of elements on which criteria is pecified on the user's query
java.lang.Object	clone() Deep clone statement to produce a new identical statement.
boolean	equals(java.lang.Object obj) Compare two CriteriaSelector for equality.
java.util.List	getElements() Get elements on which criteria is pecified on the user's query
int	getSelectorType() Get the type of criteria on the user query's elements
boolean	hasElements() Return a boolean indicating if the seletor has any elements
int	hashCode() Get hashcode for CriteriaSelector.
void	setElements(java.util.List elements) Set elements on which criteria is pecified on the user's query
void	setSelectorType(int type) Set the type of criteria on the user query's elements
java.lang.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

Field Detail

COMPARE_EQ

public static final int COMPARE_EQ

See Also:

Constant Field Values

COMPARE_NE

public static final int COMPARE_NE

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Constant Field Values

COMPARE_LT

public static final int COMPARE_LT

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Constant Field Values

COMPARE_GT

public static final int COMPARE_GT

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Constant Field Values

COMPARE_LE

public static final int COMPARE_LE

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Constant Field Values

COMPARE_GE

public static final int COMPARE_GE

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Constant Field Values

LIKE

public static final int LIKE

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Constant Field Values

IN

public static final int IN

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Constant Field Values

IS_NULL

public static final int IS_NULL

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Constant Field Values

BETWEEN

public static final int BETWEEN

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Constant Field Values

NO_TYPE

public static final int NO_TYPE

See Also:

Constant Field Values

Constructor Detail

CriteriaSelector

public CriteriaSelector()

Constructor for CriteriaSelector.

CriteriaSelector

public CriteriaSelector(int selectorType,
                        java.util.List elements)

Constructor for CriteriaSelector.

Parameters:

selectorType - The type criteria presents on the elements

elements - The elements on which

Method Detail

getSelectorType

public int getSelectorType()

Get the type of criteria on the user query's elements

Returns:

An int value giving the type of criteria

setSelectorType

public void setSelectorType(int type)

Set the type of criteria on the user query's elements

Parameters:

type - The type of criteria

getElements

public java.util.List getElements()

Get elements on which criteria is pecified on the user's query

Returns:

A collection of elements used in criteria

setElements

public void setElements(java.util.List elements)

Set elements on which criteria is pecified on the user's query

Parameters:

elements - A collection of elements used in criteria

addElement

public void addElement(ElementSymbol element)

Add an element to the collection of elements on which criteria is pecified on the user's query

Parameters:

element - The elementSymbol object being added

hasElements

public boolean hasElements()

Return a boolean indicating if the seletor has any elements

Returns:

A boolean indicating if the seletor has any elements

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 java.lang.Object clone()

Deep clone statement to produce a new identical statement.

Specified by:

clone in interface LanguageObject

Overrides:

clone in class java.lang.Object

Returns:

Deep clone

equals

public boolean equals(java.lang.Object obj)

Compare two CriteriaSelector for equality. They will only evaluate to equal if they are IDENTICAL: the selectorType and elements present are equal.

Overrides:

equals in class java.lang.Object

Parameters:

obj - Other object

Returns:

True if equal

hashCode

public int hashCode()

Get hashcode for CriteriaSelector. WARNING: This hash code relies on the hash codes of the elements and the selectortype on this object. Hash code is only valid after the block has been completely constructed.

Overrides:

hashCode in class java.lang.Object

Returns:

Hash code

toString

public java.lang.String toString()

Returns a string representation of an instance of this class.

Overrides:

toString in class java.lang.Object

Returns:

String representation of object