Package org.intermine.objectstore.query

Class QueryCast

java.lang.Object

org.intermine.objectstore.query.QueryCast

All Implemented Interfaces:

QueryEvaluable, QueryNode, QueryOrderable, QuerySelectable

public class QueryCast
extends java.lang.Object
implements QueryEvaluable

Represents a type cast in a Query.

Author:

Matthew Wakeling

Constructor Summary

Constructors

Constructor	Description
QueryCast(QueryEvaluable value, java.lang.Class<?> type)	Construct a QueryCast.

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object obj)
int	getApproximateType()	Returns an integer representing the approximate type of this QueryEvaluable, in the case where an accurate type cannot be ascertained.
java.lang.Class<?>	getType()	Get Java type represented by this item.
QueryEvaluable	getValue()	Returns the QueryEvaluable that is the actual value.
int	hashCode()
void	youAreType(java.lang.Class<?> cls)	Allows a caller to suggest to this object that it holds a value of a certain type.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryCast

public QueryCast(QueryEvaluable value,
                 java.lang.Class<?> type)

Construct a QueryCast.

Parameters:

value - the value of this QueryCast

type - the type of the value for this QueryCast to represent

Method Detail

getType

public java.lang.Class<?> getType()

Get Java type represented by this item.

Specified by:

getType in interface QueryOrderable

Specified by:

getType in interface QuerySelectable

Returns:

class describing the type

getValue

public QueryEvaluable getValue()

Returns the QueryEvaluable that is the actual value.

Returns:

the value

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

youAreType

public void youAreType(java.lang.Class<?> cls)

Allows a caller to suggest to this object that it holds a value of a certain type. This method should only be called on objects which report their type to be UnknownTypeValue. Otherwise, this method will throw and exception.

Specified by:

youAreType in interface QueryEvaluable

Parameters:

cls - the Class of the type to be imposed on this object

getApproximateType

public int getApproximateType()

Returns an integer representing the approximate type of this QueryEvaluable, in the case where an accurate type cannot be ascertained.

Specified by:

getApproximateType in interface QueryEvaluable

Returns:

an int, as described in UnknownTypeValue