com.goldencode.p2j.persist

Class DynamicTablesHelper.CacheKey

java.lang.Object

com.goldencode.p2j.persist.DynamicTablesHelper.CacheKey

Enclosing class:

DynamicTablesHelper

private static class DynamicTablesHelper.CacheKey
extends java.lang.Object

A hashable key that encapsulates the characteristics which uniquely define the structure of a dynamic temp-table; namely, its field and index definitions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	DynamicTablesHelper.CacheKey.IndexKey Instances of this class are used to wrap instances of P2JIndex, for purposes of producing hash codes suitable for using instances of the enclosing class as hash map keys.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.List<P2JField>	fields List of field definitions for a dynamic temp-table
private java.util.List<DynamicTablesHelper.CacheKey.IndexKey>	indexes List of index definition wrappers for a dynamic temp-table

Constructor Summary

Constructors

Constructor and Description
CacheKey(java.util.Collection<P2JField> fields, java.util.Collection<P2JIndex> indexes) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Use the field and index definitions in this key to determine equivalence with the given object.
int	hashCode() Use the field and index definitions in this key to calculate a hash code.
java.lang.String	toString() To string method concatenating the string values of all fields and indexes.

Methods inherited from class java.lang.Object

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

Field Detail

fields

private final java.util.List<P2JField> fields

List of field definitions for a dynamic temp-table

indexes

private final java.util.List<DynamicTablesHelper.CacheKey.IndexKey> indexes

List of index definition wrappers for a dynamic temp-table

Constructor Detail

CacheKey

CacheKey(java.util.Collection<P2JField> fields,
         java.util.Collection<P2JIndex> indexes)

Constructor.

Parameters:

fields - Collection of field definitions for a dynamic temp-table.

indexes - Collection of index definitions for a dynamic temp-table.

Method Detail

hashCode

public int hashCode()

Use the field and index definitions in this key to calculate a hash code. This implementation is consistent with this class' implementation of equals(Object).

Overrides:

hashCode in class java.lang.Object

Returns:

Hash code.

equals

public boolean equals(java.lang.Object o)

Use the field and index definitions in this key to determine equivalence with the given object. This implementation is consistent with this class' implementation of hashCode().

Overrides:

equals in class java.lang.Object

Returns:

true if this object is equivalent with o, else false.

toString

public java.lang.String toString()

To string method concatenating the string values of all fields and indexes.

Overrides:

toString in class java.lang.Object

Returns:

string value of this CacheKey object.