com.goldencode.p2j.convert.db

Class H2Set

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

java.util.TreeSet

com.goldencode.p2j.convert.db.H2Set

All Implemented Interfaces:

StoredCollection, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable, java.util.Collection, java.util.NavigableSet, java.util.Set, java.util.SortedSet

Direct Known Subclasses:

H2ChildSet

class H2Set
extends java.util.TreeSet
implements StoredCollection

A H2-backed set, which has any changes to it logged in a separate work table.

Field Summary

Fields

Modifier and Type	Field and Description
protected LoggedCollection	changes The change logger for this collection.
private java.lang.String	clearSql The set's clear SQL.
private DBHelper	helper The helper for SQL usage.
private java.lang.String	insertSql The set's insert SQL.
private java.lang.Class<?>	keyClass The element's class.
private AstManager	manager The AST manager.
private AstSymbolResolver	resolver The AST symbol resolver.
private java.lang.String	tableName The set's table name.
private java.lang.String	workClearSql The set's work table clear SQL.
private java.lang.String	workInsertSql The set's work table insert SQL.
private java.lang.String	workTable The set's work table name.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	H2Set() Constructor used for sub-classes, which delegate the db-storage to another collection.
	H2Set(java.lang.Class<?> keyClass, java.lang.String table, DBHelper helper) Create a new db-backed set, with the specified name.

Method Summary

Modifier and Type	Method and Description
boolean	add(java.lang.Object key) Perform an add operation.
boolean	addAll(java.util.Collection c) Merge the specified collection into this one.
void	clear() Clear the set and all its changes.
boolean	contains(java.lang.Object key) Check if the set contains the specified key.
private void	logChange(java.lang.Object key) Log this access in the set as a change.
void	persist() Persist this set and all the changes to the database.
boolean	remove(java.lang.Object key) Remove this key from the set.

Methods inherited from class java.util.TreeSet

ceiling, clone, comparator, descendingIterator, descendingSet, first, floor, headSet, headSet, higher, isEmpty, iterator, last, lower, pollFirst, pollLast, size, spliterator, subSet, subSet, tailSet, tailSet

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.goldencode.p2j.convert.db.StoredCollection

compact, inPersist, unwrapValue, wrapValue

Methods inherited from interface java.util.Set

containsAll, equals, hashCode, removeAll, retainAll, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

changes

protected final LoggedCollection changes

The change logger for this collection.

resolver

private final AstSymbolResolver resolver

The AST symbol resolver.

manager

private final AstManager manager

The AST manager.

helper

private final DBHelper helper

The helper for SQL usage.

keyClass

private final java.lang.Class<?> keyClass

The element's class.

tableName

private final java.lang.String tableName

The set's table name.

workTable

private final java.lang.String workTable

The set's work table name.

insertSql

private final java.lang.String insertSql

The set's insert SQL.

clearSql

private final java.lang.String clearSql

The set's clear SQL.

workInsertSql

private final java.lang.String workInsertSql

The set's work table insert SQL.

workClearSql

private final java.lang.String workClearSql

The set's work table clear SQL.

Constructor Detail

H2Set

public H2Set(java.lang.Class<?> keyClass,
             java.lang.String table,
             DBHelper helper)

Create a new db-backed set, with the specified name.

Parameters:

keyClass - The element's class.

table - The set's (and main table) name.

helper - The SQL helper.

H2Set

protected H2Set()

Constructor used for sub-classes, which delegate the db-storage to another collection.

Method Detail

contains

public boolean contains(java.lang.Object key)

Check if the set contains the specified key.

If the key exists, the access will be logged. This assumes the source AST requires for the key to have this specific value.

Specified by:

contains in interface java.util.Collection

Specified by:

contains in interface java.util.Set

Overrides:

contains in class java.util.TreeSet

Parameters:

key - The key to check.

Returns:

true if the key exists in the set.

add

public boolean add(java.lang.Object key)

Perform an add operation.

The access will be logged. This assumes the source AST requires for the key to have this specific value.

Specified by:

add in interface java.util.Collection

Specified by:

add in interface java.util.Set

Overrides:

add in class java.util.TreeSet

Parameters:

key - The key.

Returns:

true if the key already exists.

addAll

public boolean addAll(java.util.Collection c)

Merge the specified collection into this one. This will rely on add(java.lang.Object) to log the access to the set.

Specified by:

addAll in interface java.util.Collection

Specified by:

addAll in interface java.util.Set

Overrides:

addAll in class java.util.TreeSet

Parameters:

c - The collection to merge.

remove

public boolean remove(java.lang.Object key)

Remove this key from the set.

If the key exists, then all changes related to it will be cleared.

Specified by:

remove in interface java.util.Collection

Specified by:

remove in interface java.util.Set

Overrides:

remove in class java.util.TreeSet

Parameters:

key - The key to remove.

clear

public void clear()

Clear the set and all its changes.

Specified by:

clear in interface StoredCollection

Specified by:

clear in interface java.util.Collection

Specified by:

clear in interface java.util.Set

Overrides:

clear in class java.util.TreeSet

persist

public void persist()

Persist this set and all the changes to the database.

Specified by:

persist in interface StoredCollection

logChange

private void logChange(java.lang.Object key)

Log this access in the set as a change.

Parameters:

key - The accessed key.