org.modeshape.jcr.value.binary
Class Database

java.lang.Object
  org.modeshape.jcr.value.binary.Database

public class Database
extends Object

Helper class for manipulation with database.

Author:

kulikov

Constructor Summary

Database(Connection connection)

Method Summary

static InputStream	asStream(ResultSet rs) Provides access to query data
static String	asString(ResultSet rs) Provides access to query data
protected String	blobType(Connection connection, int size) Determine the database-specific BLOB column type.
void	createTable() Creates table for storage.
static void	execute(PreparedStatement sql) Executes specifies statement.
static ResultSet	executeQuery(PreparedStatement sql) Runs SQL statement
static void	executeUpdate(PreparedStatement sql) Executes specifies update statement.
PreparedStatement	insertContentSQL(BinaryKey key, InputStream stream) Create statement for store content.
PreparedStatement	markUnusedSQL(BinaryKey key) Generates SQL statement which marks content as not used.
PreparedStatement	removeExpiredContentSQL(long deadline) Generates SQL statement which removes expired content.
PreparedStatement	retrieveContentSQL(BinaryKey key) Generates SQL statement for content retrieve.
PreparedStatement	retrieveExtTextSQL(BinaryKey key) Generate SQL statement which returns extracted text.
PreparedStatement	retrieveMimeTypeSQL(BinaryKey key) Generates SQL statement for mime type retrieve.
boolean	tableExists() Checks database for CONTENT_STORE table
PreparedStatement	updateExtTextSQL(BinaryKey key, String text) Generates SQL statement which updates extracted text field.
PreparedStatement	updateMimeTypeSQL(BinaryKey key, String mimeType) Generates SQL statement which modifies mime type value.

Methods inherited from class java.lang.Object

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

Constructor Detail

Database

public Database(Connection connection)

Method Detail

insertContentSQL

public PreparedStatement insertContentSQL(BinaryKey key,
                                          InputStream stream)
                                   throws BinaryStoreException

Create statement for store content.

Parameters:

key - unique content identifier

stream - content to store

Returns:

SQL statement.

Throws:

BinaryStoreException

retrieveContentSQL

public PreparedStatement retrieveContentSQL(BinaryKey key)
                                     throws BinaryStoreException

Generates SQL statement for content retrieve.

Parameters:

key - content id

Returns:

executable SQL statement

Throws:

BinaryStoreException

markUnusedSQL

public PreparedStatement markUnusedSQL(BinaryKey key)
                                throws BinaryStoreException

Generates SQL statement which marks content as not used.

Parameters:

key - the content id.

Returns:

SQL statement.

Throws:

BinaryStoreException

removeExpiredContentSQL

public PreparedStatement removeExpiredContentSQL(long deadline)
                                          throws BinaryStoreException

Generates SQL statement which removes expired content.

Parameters:

deadline - expire time

Returns:

SQL statement.

Throws:

BinaryStoreException

retrieveMimeTypeSQL

public PreparedStatement retrieveMimeTypeSQL(BinaryKey key)
                                      throws BinaryStoreException

Generates SQL statement for mime type retrieve.

Parameters:

key - content id

Returns:

SQL statement.

Throws:

BinaryStoreException

updateMimeTypeSQL

public PreparedStatement updateMimeTypeSQL(BinaryKey key,
                                           String mimeType)
                                    throws BinaryStoreException

Generates SQL statement which modifies mime type value.

Parameters:

key - content id

mimeType - the new value for mime type

Returns:

SQL statement

Throws:

BinaryStoreException

retrieveExtTextSQL

public PreparedStatement retrieveExtTextSQL(BinaryKey key)
                                     throws BinaryStoreException

Generate SQL statement which returns extracted text.

Parameters:

key - content id

Returns:

SQL statement

Throws:

BinaryStoreException

updateExtTextSQL

public PreparedStatement updateExtTextSQL(BinaryKey key,
                                          String text)
                                   throws BinaryStoreException

Generates SQL statement which updates extracted text field.

Parameters:

key - content id

text - new value for the extracted text

Returns:

SQL statement

Throws:

BinaryStoreException

execute

public static void execute(PreparedStatement sql)
                    throws BinaryStoreException

Executes specifies statement.

Parameters:

sql - the statement to execute

Throws:

BinaryStoreException

executeQuery

public static ResultSet executeQuery(PreparedStatement sql)
                              throws BinaryStoreException

Runs SQL statement

Parameters:

sql - SQL statement

Returns:

result of statement execution

Throws:

BinaryStoreException

executeUpdate

public static void executeUpdate(PreparedStatement sql)
                          throws BinaryStoreException

Executes specifies update statement.

Parameters:

sql - the statement to execute

Throws:

BinaryStoreException

asStream

public static InputStream asStream(ResultSet rs)
                            throws BinaryStoreException

Provides access to query data

Parameters:

rs - retrieved single value

Returns:

result as input stream.

Throws:

BinaryStoreException

asString

public static String asString(ResultSet rs)
                       throws BinaryStoreException

Provides access to query data

Parameters:

rs - retrieved query result

Returns:

result as string.

Throws:

BinaryStoreException

tableExists

public boolean tableExists()
                    throws BinaryStoreException

Checks database for CONTENT_STORE table

Returns:

true if table exists

Throws:

BinaryStoreException

createTable

public void createTable()
                 throws BinaryStoreException

Creates table for storage.

Throws:

BinaryStoreException

blobType

protected String blobType(Connection connection,
                          int size)
                   throws BinaryStoreException

Determine the database-specific BLOB column type.

Parameters:

connection - the connection

size - the size of the column

Returns:

the type of BLOB column; never null but possibly empty

Throws:

BinaryStoreException