org.nuxeo.ecm.core.storage.sql

Class SoftRefCachingRowMapper

java.lang.Object

org.nuxeo.ecm.core.storage.sql.SoftRefCachingRowMapper

All Implemented Interfaces:

RowMapper

Direct Known Subclasses:

SoftRefCachingMapper

public class SoftRefCachingRowMapper
extends Object
implements RowMapper

A RowMapper that has an internal cache.

The cache only holds Rows that are known to be identical to what's in the underlying RowMapper.

Nested Class Summary

Nested classes/interfaces inherited from interface org.nuxeo.ecm.core.storage.sql.RowMapper

RowMapper.CopyResult, RowMapper.IdWithTypes, RowMapper.NodeInfo, RowMapper.RowBatch, RowMapper.RowUpdate

Field Summary

Fields

Modifier and Type	Field and Description
InvalidationsQueue	cacheQueue The queue of cache invalidations received from other session, to process at pre-transaction time.

Constructor Summary

Constructors

Constructor and Description
SoftRefCachingRowMapper()

Method Summary

Methods

Modifier and Type	Method and Description
void	clearCache() Clears the mapper's cache (if any)
void	close()
RowMapper.CopyResult	copy(RowMapper.IdWithTypes source, Serializable destParentId, String destName, Row overwriteRow) Copies the hierarchy starting from a given row to a new parent with a new name.
Serializable	generateNewId() Computes a new unique id.
Map<String,String>	getBinaryFulltext(RowId rowId) Gets the fulltext extracted from the binary fields.
long	getCacheSize() Evaluate the cached elements size
void	initialize(String repositoryName, Model model, RowMapper rowMapper, InvalidationsPropagator cachePropagator, Map<String,String> properties)
List<? extends RowId>	read(Collection<RowId> rowIds, boolean cacheOnly) Reads a set of rows for the given RowIds.
Serializable[]	readCollectionRowArray(RowId rowId) Gets an array for a CollectionFragment from the database, given its table name and id.
List<Row>	readSelectionRows(SelectionType selType, Serializable selId, Serializable filter, Serializable criterion, boolean limitToOne) Reads the rows corresponding to a selection.
Row	readSimpleRow(RowId rowId) Gets a row for a SimpleFragment from the database, given its table name and id.
Invalidations	receiveInvalidations() Processes and returns the invalidations queued for processing by the cache (if any).
List<RowMapper.NodeInfo>	remove(RowMapper.NodeInfo rootInfo) Deletes a hierarchy and returns information to generate invalidations.
void	rollback(Xid xid) Rollback the XA Resource.
void	sendInvalidations(Invalidations invalidations) Post-transaction invalidations notification.
void	write(RowMapper.RowBatch batch) Writes a set of rows.

Methods inherited from class java.lang.Object

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

Field Detail

cacheQueue

public final InvalidationsQueue cacheQueue

The queue of cache invalidations received from other session, to process at pre-transaction time.

Constructor Detail

SoftRefCachingRowMapper

public SoftRefCachingRowMapper()

Method Detail

initialize

public void initialize(String repositoryName,
              Model model,
              RowMapper rowMapper,
              InvalidationsPropagator cachePropagator,
              Map<String,String> properties)

close

public void close()
           throws StorageException

Throws:

StorageException

generateNewId

public Serializable generateNewId()
                           throws StorageException

Description copied from interface: RowMapper

Computes a new unique id.

Specified by:

generateNewId in interface RowMapper

Returns:

a new unique id

Throws:

StorageException

receiveInvalidations

public Invalidations receiveInvalidations()
                                   throws StorageException

Description copied from interface: RowMapper

Processes and returns the invalidations queued for processing by the cache (if any).

Called pre-transaction by session start or transactionless save;

Specified by:

receiveInvalidations in interface RowMapper

Returns:

the invalidations, or null

Throws:

StorageException

sendInvalidations

public void sendInvalidations(Invalidations invalidations)
                       throws StorageException

Description copied from interface: RowMapper

Post-transaction invalidations notification.

Called post-transaction by session commit/rollback or transactionless save.

Specified by:

sendInvalidations in interface RowMapper

Parameters:

invalidations - the known invalidations to send to others, or null

Throws:

StorageException

clearCache

public void clearCache()

Description copied from interface: RowMapper

Clears the mapper's cache (if any)

Called after a rollback, or a manual clear through RepositoryStatus MBean.

Specified by:

clearCache in interface RowMapper

getCacheSize

public long getCacheSize()

Description copied from interface: RowMapper

Evaluate the cached elements size

Specified by:

getCacheSize in interface RowMapper

rollback

public void rollback(Xid xid)
              throws XAException

Description copied from interface: RowMapper

Rollback the XA Resource.

This is in the RowMapper interface because on rollback the cache must be invalidated.

Specified by:

rollback in interface RowMapper

Throws:

XAException

read

public List<? extends RowId> read(Collection<RowId> rowIds,
                         boolean cacheOnly)
                           throws StorageException

Description copied from interface: RowMapper

Reads a set of rows for the given RowIds.

For each requested row, either a Row is found and returned, or a RowId (not implementing Row) is returned to signify an absent row.

Specified by:

read in interface RowMapper

Parameters:

rowIds - the row ids (including their table name)

cacheOnly - if true, only hit memory

Returns:

the collection of Rows (or RowIds if the row was absent from the database). Order is not the same as the input rowIds

Throws:

StorageException

write

public void write(RowMapper.RowBatch batch)
           throws StorageException

Description copied from interface: RowMapper

Writes a set of rows. This includes creating, updating and deleting rows.

Specified by:

write in interface RowMapper

Parameters:

batch - the set of rows and the operations to do on them

Throws:

StorageException

readSimpleRow

public Row readSimpleRow(RowId rowId)
                  throws StorageException

Description copied from interface: RowMapper

Gets a row for a SimpleFragment from the database, given its table name and id. If the row doesn't exist, null is returned.

Specified by:

readSimpleRow in interface RowMapper

Parameters:

rowId - the row id

Returns:

the row, or null

Throws:

StorageException

getBinaryFulltext

public Map<String,String> getBinaryFulltext(RowId rowId)
                                     throws StorageException

Description copied from interface: RowMapper

Gets the fulltext extracted from the binary fields.

Specified by:

getBinaryFulltext in interface RowMapper

Parameters:

rowId - the row id

Returns:

the fulltext string representation or null if unsupported

Throws:

StorageException

readCollectionRowArray

public Serializable[] readCollectionRowArray(RowId rowId)
                                      throws StorageException

Description copied from interface: RowMapper

Gets an array for a CollectionFragment from the database, given its table name and id. If no rows are found, an empty array is returned.

Specified by:

readCollectionRowArray in interface RowMapper

Parameters:

rowId - the row id

Returns:

the array

Throws:

StorageException

readSelectionRows

public List<Row> readSelectionRows(SelectionType selType,
                          Serializable selId,
                          Serializable filter,
                          Serializable criterion,
                          boolean limitToOne)
                            throws StorageException

Description copied from interface: RowMapper

Reads the rows corresponding to a selection.

Specified by:

readSelectionRows in interface RowMapper

Parameters:

selType - the selection type

selId - the selection id (parent id for a hierarchy selection)

filter - the filter value (name for a hierarchy selection)

criterion - an optional additional criterion depending on the selection type (complex prop flag for a hierarchy selection)

limitToOne - whether to stop after one row retrieved

Returns:

the list of rows

Throws:

StorageException

copy

public RowMapper.CopyResult copy(RowMapper.IdWithTypes source,
                        Serializable destParentId,
                        String destName,
                        Row overwriteRow)
                          throws StorageException

Description copied from interface: RowMapper

Copies the hierarchy starting from a given row to a new parent with a new name.

If the new parent is null, then this is a version creation, which doesn't recurse in regular children.

If overwriteRow is passed, the copy is done onto this existing node as its root (version restore) instead of creating a new node in the parent.

Specified by:

copy in interface RowMapper

Parameters:

source - the id, primary type and mixin types of the row to copy

destParentId - the new parent id, or null

destName - the new name

overwriteRow - when not null, the copy is done onto this existing row, and the values are set in hierarchy

Returns:

info about the copy

Throws:

StorageException

remove

public List<RowMapper.NodeInfo> remove(RowMapper.NodeInfo rootInfo)
                                throws StorageException

Description copied from interface: RowMapper

Deletes a hierarchy and returns information to generate invalidations.

Specified by:

remove in interface RowMapper

Parameters:

rootInfo - info about the root to be deleted with its children (root id, and the rest is for invalidations)

Returns:

info about the descendants removed (including the root)

Throws:

StorageException