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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.store.access.conglomerate

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

org.apache.derby.impl.store.access.conglomerate .BinaryOrderableWrapper

BinaryOrderableWrapper
class BinaryOrderableWrapper implements Storable(Code)
	The BinaryOrderableWrapper is a wrapper class which intercepts the readExternal() callback made by raw store during a fetch, and does a comparison instead.

Field Summary
int	cmp_result
BinaryOrderable	other_object
BinaryOrderable	ref_object

Constructor Summary
	BinaryOrderableWrapper()

Method Summary
public int	getCmpResult() Short one line description of routine.
public int	getTypeFormatId()
protected void	init(BinaryOrderable ref_object, BinaryOrderable other_object) Short one line description of routine. Longer descrption of routine. Parameters: ref_object - The object that this object is wrapping (ie.
public boolean	isNull() Return whether the value is null or not.
public void	readExternal(ObjectInput in) Restore the in-memory representation from the stream.
public void	readExternalFromArray(ArrayInputStream in)
public void	restoreToNull() Restore the in-memory representation to the null value.
public void	writeExternal(ObjectOutput out) Store the stored representation of the column value in the stream.

Field Detail

cmp_result
int cmp_result(Code)

other_object
BinaryOrderable other_object(Code)

ref_object
BinaryOrderable ref_object(Code)

Constructor Detail

BinaryOrderableWrapper
BinaryOrderableWrapper()(Code)

Method Detail

getCmpResult

public int getCmpResult()(Code)

Short one line description of routine.

Longer descrption of routine.

The identifier to be used to open the conglomerate later.

getTypeFormatId
public int getTypeFormatId()(Code)

init

protected void init(BinaryOrderable ref_object, BinaryOrderable other_object)(Code)

Short one line description of routine.

Longer descrption of routine.

Parameters:
ref_object - The object that this object is wrapping (ie. beingread from disk)
Parameters:
other_object - The object to compare ref_object to.

isNull
public boolean isNull()(Code)
	Return whether the value is null or not. The containerid being zero is what determines nullness; subclasses are not expected to override this method. See Also: org.apache.derby.iapi.services.io.Storable.isNull

readExternal
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code)
	Restore the in-memory representation from the stream. exception: ClassNotFoundException - Thrown if the stored representation isserialized and a class named in the stream could not be found. exception: IOException - thrown by readObject() See Also: java.io.Externalizable.readExternal

readExternalFromArray
public void readExternalFromArray(ArrayInputStream in) throws IOException, ClassNotFoundException(Code)

restoreToNull
public void restoreToNull()(Code)
	Restore the in-memory representation to the null value. The containerid being zero is what determines nullness; subclasses are not expected to override this method. See Also: org.apache.derby.iapi.services.io.Storable.restoreToNull

writeExternal
public void writeExternal(ObjectOutput out) throws IOException(Code)
	Store the stored representation of the column value in the stream. A BinaryOrderableWrapper is never used to store data out, only to read data from disk and compare it to another byte stream. Parameters: out - Stream to write the object to. exception: IOException - thrown by writeObject()

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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