com.goldencode.p2j.persist.orm

Class Persister.UpdateInfo

java.lang.Object

com.goldencode.p2j.persist.orm.Persister.UpdateInfo

Enclosing class:

Persister

private static class Persister.UpdateInfo
extends java.lang.Object

This class acts both as key and value for storing the information on a cached UPDATE set of statements. The key part is formed by the type and state members, while the sqlStrs and paramsIdx are the 'payload': the list of statements as strings, respectively the indexes of the fields that are updated by respective statement.

As result objects of this class have two usages:

• cache lookup: only the type and state are set (sqlStrs and paramsIdx remain unset). This is enough to locate a record in the cache;
• storage: all fields are set. The object is both the key and the value in the cache map.

Field Summary

Fields

Modifier and Type	Field and Description
private int	hash The hash value.
private java.util.Map<java.lang.Integer,java.util.List<java.lang.Integer>>	paramsIdx The indexes of properties that are used in the corresponding statement.
private java.util.Map<java.lang.Integer,java.lang.String>	sqlStrs The list of UPDATE statements.
private java.util.BitSet	state The set of properties that are updated by the statements.
private java.lang.Class<? extends BaseRecord>	type The DMO that is affected by the cached statements stored here.

Constructor Summary

Constructors

Constructor and Description
UpdateInfo(java.lang.Class<? extends BaseRecord> type, java.util.BitSet state) The constructor only takes as parameters the data for key part.

Method Summary

Modifier and Type	Method and Description
void	configure(java.util.Map<java.lang.Integer,java.lang.String> sqlStrs, java.util.Map<java.lang.Integer,java.util.List<java.lang.Integer>> paramsIdx) Configures this object for usage.
boolean	equals(java.lang.Object o) Test for equality with another object o.
int	hashCode() Returns the pre-computed hash code.

Methods inherited from class java.lang.Object

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

Field Detail

type

private final java.lang.Class<? extends BaseRecord> type

The DMO that is affected by the cached statements stored here. Part of the key.

state

private final java.util.BitSet state

The set of properties that are updated by the statements. Part of the key.

hash

private final int hash

The hash value. It is computed a the in the constructor for the immutable part of the object.

sqlStrs

private java.util.Map<java.lang.Integer,java.lang.String> sqlStrs

The list of UPDATE statements. Part of the value payload.

paramsIdx

private java.util.Map<java.lang.Integer,java.util.List<java.lang.Integer>> paramsIdx

The indexes of properties that are used in the corresponding statement. Part of the value payload.

Constructor Detail

UpdateInfo

public UpdateInfo(java.lang.Class<? extends BaseRecord> type,
                  java.util.BitSet state)

The constructor only takes as parameters the data for key part.

Parameters:

type - The Class of the record to be processed.

state - The set of bits representing the properties altered that need to be updated.

Method Detail

equals

public boolean equals(java.lang.Object o)

Test for equality with another object o.

Overrides:

equals in class java.lang.Object

Parameters:

o - The object to test for equality.

Returns:

true only when this and o represent the same logical object.

hashCode

public int hashCode()

Returns the pre-computed hash code.

Overrides:

hashCode in class java.lang.Object

Returns:

the pre-computed hash code.

configure

public void configure(java.util.Map<java.lang.Integer,java.lang.String> sqlStrs,
                      java.util.Map<java.lang.Integer,java.util.List<java.lang.Integer>> paramsIdx)

Configures this object for usage.

Parameters:

sqlStrs - The SQL UPDATE statements, mapped by the extent.

paramsIdx - The indexes in the data for each SQL positional parameter.