org.apache.lucene.analysis

Class NumericTokenStream.NumericTermAttributeImpl

java.lang.Object

org.apache.lucene.util.AttributeImpl

org.apache.lucene.analysis.NumericTokenStream.NumericTermAttributeImpl

All Implemented Interfaces:

Cloneable, NumericTokenStream.NumericTermAttribute, TermToBytesRefAttribute, Attribute

Enclosing class:

NumericTokenStream

public static final class NumericTokenStream.NumericTermAttributeImpl
extends AttributeImpl
implements NumericTokenStream.NumericTermAttribute, TermToBytesRefAttribute

Implementation of NumericTokenStream.NumericTermAttribute.

Since:

4.0

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Constructor Summary

Constructors

Constructor and Description
NumericTokenStream.NumericTermAttributeImpl() Creates, but does not yet initialize this attribute instance

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Clears the values in this AttributeImpl and resets it to its default value.
NumericTokenStream.NumericTermAttributeImpl	clone() In most cases the clone is, and should be, deep in order to be able to properly capture the state of all attributes.
void	copyTo(AttributeImpl target) Copies the values from this Attribute into the passed-in target attribute.
boolean	equals(Object obj)
BytesRef	getBytesRef() Retrieve this attribute's BytesRef.
long	getRawValue() Returns current token's raw value as long with all NumericTokenStream.NumericTermAttribute.getShift() applied, undefined before first token
int	getShift() Returns current shift value, undefined before first token
int	getValueSize() Returns value size in bits (32 for float, int; 64 for double, long)
int	hashCode()
int	incShift() Don't call this method!
void	init(long value, int valueSize, int precisionStep, int shift) Don't call this method!
void	reflectWith(AttributeReflector reflector) This method is for introspection of attributes, it should simply add the key/values this attribute holds to the given AttributeReflector.
void	setShift(int shift) Don't call this method!

Methods inherited from class org.apache.lucene.util.AttributeImpl

reflectAsString

Methods inherited from class java.lang.Object

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

Constructor Detail

NumericTokenStream.NumericTermAttributeImpl

public NumericTokenStream.NumericTermAttributeImpl()

Creates, but does not yet initialize this attribute instance

See Also:

init(long, int, int, int)

Method Detail

getBytesRef

public BytesRef getBytesRef()

Description copied from interface: TermToBytesRefAttribute

Retrieve this attribute's BytesRef. The bytes are updated from the current term. The implementation may return a new instance or keep the previous one.

Specified by:

getBytesRef in interface TermToBytesRefAttribute

Returns:

a BytesRef to be indexed (only stays valid until token stream gets incremented)

getShift

public int getShift()

Description copied from interface: NumericTokenStream.NumericTermAttribute

Returns current shift value, undefined before first token

Specified by:

getShift in interface NumericTokenStream.NumericTermAttribute

setShift

public void setShift(int shift)

Description copied from interface: NumericTokenStream.NumericTermAttribute

Don't call this method!

Specified by:

setShift in interface NumericTokenStream.NumericTermAttribute

incShift

public int incShift()

Description copied from interface: NumericTokenStream.NumericTermAttribute

Don't call this method!

Specified by:

incShift in interface NumericTokenStream.NumericTermAttribute

getRawValue

public long getRawValue()

Description copied from interface: NumericTokenStream.NumericTermAttribute

Returns current token's raw value as long with all NumericTokenStream.NumericTermAttribute.getShift() applied, undefined before first token

Specified by:

getRawValue in interface NumericTokenStream.NumericTermAttribute

getValueSize

public int getValueSize()

Description copied from interface: NumericTokenStream.NumericTermAttribute

Returns value size in bits (32 for float, int; 64 for double, long)

Specified by:

getValueSize in interface NumericTokenStream.NumericTermAttribute

init

public void init(long value,
        int valueSize,
        int precisionStep,
        int shift)

Description copied from interface: NumericTokenStream.NumericTermAttribute

Don't call this method!

Specified by:

init in interface NumericTokenStream.NumericTermAttribute

clear

public void clear()

Description copied from class: AttributeImpl

Clears the values in this AttributeImpl and resets it to its default value. If this implementation implements more than one Attribute interface it clears all.

Specified by:

clear in class AttributeImpl

reflectWith

public void reflectWith(AttributeReflector reflector)

Description copied from class: AttributeImpl

This method is for introspection of attributes, it should simply add the key/values this attribute holds to the given AttributeReflector.

Implementations look like this (e.g. for a combined attribute implementation):

   public void reflectWith(AttributeReflector reflector) {
     reflector.reflect(CharTermAttribute.class, "term", term());
     reflector.reflect(PositionIncrementAttribute.class, "positionIncrement", getPositionIncrement());
   }
 

If you implement this method, make sure that for each invocation, the same set of Attribute interfaces and keys are passed to AttributeReflector.reflect(java.lang.Class<? extends org.apache.lucene.util.Attribute>, java.lang.String, java.lang.Object) in the same order, but possibly different values. So don't automatically exclude e.g. null properties!

Important for migration to Lucene 6: The default implementation is implemented for backwards compatibility in Lucene 5 and calls AttributeReflector.reflect(java.lang.Class<? extends org.apache.lucene.util.Attribute>, java.lang.String, java.lang.Object) for all non-static fields from the implementing class, using the field name as key and the field value as value. The Attribute class is also determined by reflection. Please note that the default implementation can only handle single-Attribute implementations.

Please don't use the default implementation anymore, because it will be made abstract in Lucene 6! See above for implementation example.

Overrides:

reflectWith in class AttributeImpl

See Also:

AttributeImpl.reflectAsString(boolean)

copyTo

public void copyTo(AttributeImpl target)

Description copied from class: AttributeImpl

Copies the values from this Attribute into the passed-in target attribute. The target implementation must support all the Attributes this implementation supports.

Specified by:

copyTo in class AttributeImpl

clone

public NumericTokenStream.NumericTermAttributeImpl clone()

Description copied from class: AttributeImpl

In most cases the clone is, and should be, deep in order to be able to properly capture the state of all attributes.

Overrides:

clone in class AttributeImpl

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object