org.hypergraphdb.type.javaprimitive

Class IntType

java.lang.Object

org.hypergraphdb.type.javaprimitive.PrimitiveTypeBase<T>

org.hypergraphdb.type.javaprimitive.NumericTypeBase<Integer>

org.hypergraphdb.type.javaprimitive.IntType

All Implemented Interfaces:

HGGraphHolder, HGOrderedSearchable<Integer,HGPersistentHandle>, HGSearchable<Integer,HGPersistentHandle>, ByteArrayConverter<Integer>, HGAtomType, HGPrimitiveType<Integer>, HGRefCountedType

public final class IntType
extends NumericTypeBase<Integer>

The implementation of the primitive Integer type.

A java.lang.Integer object is translated to a byte [] as follows:

• The first 4 bytes consitute an unsigned integer - the reference count for the string. The reference count is managed by the superclass
• The rest of the bytes constitute the actual string with the default 8-bit Java encoding.

Author:

Borislav Iordanov

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IntType.IntComparator

Nested classes/interfaces inherited from class org.hypergraphdb.type.javaprimitive.NumericTypeBase

NumericTypeBase.NumericComparator

Field Summary

Fields

Modifier and Type	Field and Description
static String	INDEX_NAME

Fields inherited from class org.hypergraphdb.type.javaprimitive.NumericTypeBase

COMPARATOR

Fields inherited from class org.hypergraphdb.type.javaprimitive.PrimitiveTypeBase

dataOffset, graph, valueIndex

Constructor Summary

Constructors

Constructor and Description
IntType()

Method Summary

Methods

Modifier and Type	Method and Description
protected static Integer	bytesToInt(byte[] bytes, int offset)
Comparator<byte[]>	getComparator() Return a java.util.Comparator instance that provides an order relation of the values of the primitive type.
protected String	getIndexName() Return the name of the DB index to create for the primitive values.
protected Integer	readBytes(byte[] bytes, int offset)
protected byte[]	writeBytes(Integer value)

Methods inherited from class org.hypergraphdb.type.javaprimitive.PrimitiveTypeBase

compare, find, findGT, findGTE, findLT, findLTE, fromByteArray, getIndex, getRefCount, getRefCountFor, make, putRefCount, release, setHyperGraph, store, storeImpl, subsumes, toByteArray

Methods inherited from class java.lang.Object

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

Field Detail

INDEX_NAME

public static final String INDEX_NAME

See Also:

Constant Field Values

Constructor Detail

IntType

public IntType()

Method Detail

getComparator

public Comparator<byte[]> getComparator()

Description copied from interface: HGPrimitiveType

Return a java.util.Comparator instance that provides an order relation of the values of the primitive type. An implementation is allowed to return null in which case it is assumed that the type does not offer an ordering relation. However, if a non-null value is returned, it is must be of a publicly available and default constructible class.

Specified by:

getComparator in interface HGPrimitiveType<Integer>

Overrides:

getComparator in class NumericTypeBase<Integer>

getIndexName

protected String getIndexName()

Description copied from class: PrimitiveTypeBase

Return the name of the DB index to create for the primitive values.

Specified by:

getIndexName in class PrimitiveTypeBase<Integer>

writeBytes

protected byte[] writeBytes(Integer value)

Specified by:

writeBytes in class PrimitiveTypeBase<Integer>

readBytes

protected Integer readBytes(byte[] bytes,
                int offset)

Specified by:

readBytes in class PrimitiveTypeBase<Integer>

bytesToInt

protected static Integer bytesToInt(byte[] bytes,
                 int offset)