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Java Source Code / Java Documentation » Search Engine » compass 2.0 » org.apache.lucene.store.jdbc.dialect   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.lucene.store.jdbc.dialect.Dialect All known Subclasses:   org.apache.lucene.store.jdbc.dialect.PostgreSQLDialect,  org.apache.lucene.store.jdbc.dialect.MySQLDialect,  org.apache.lucene.store.jdbc.dialect.H2Dialect,  org.apache.lucene.store.jdbc.dialect.InterbaseDialect,  org.apache.lucene.store.jdbc.dialect.HSQLDialect,  org.apache.lucene.store.jdbc.dialect.DB2Dialect,  org.apache.lucene.store.jdbc.dialect.OracleDialect,  org.apache.lucene.store.jdbc.dialect.SybaseDialect, Dialect abstract public class Dialect (Code) A database specific abstraction. All other dialects must extend this Dialect. author:    kimchy Method Summary public  String closeBlobSelectQuote()      public  char closeQuote()      The closing quote for a quoted identifier . abstract public  String getBitType()      The database BIT type. abstract public  String getBlobType(long length)      The database blob type for the given length. public  String getCascadeConstraintsString()      abstract public  String getCurrentTimestampFunction()      The database current timestamp function that is used with several sql updates. public  String getCurrentTimestampSelectString()      The database current time stamp select query. public  String getForUpdateNowaitString()      Does this dialect support the Oracle-style FOR UPDATE NOWAIT syntax? Defaults to Dialect.getForUpdateString() . public  String getForUpdateString()      Does this dialect support the FOR UPDATE syntax? Defaults to for update. abstract public  String getNumberType()      The database number type. public  String getTableTypeString()      The type of the table that is created. abstract public  String getTimestampType()      The database TIMESTAMP type. abstract public  String getVarcharType(int length)      The database varchar type for the given length. public  boolean isCurrentTimestampSelectStringCallable()      If the current timestamp select queyr is a callable query or not. public  String openBlobSelectQuote()      public  char openQuote()      The opening quote for a quoted identifier. public  void processSettings(JdbcDirectorySettings settings)      Process settings and apply any dialect related changes. public  String sqlTableExists(String catalog, String schemaName)      If the dialect support a special query to check if a table exists, the actual sql that is used to perform it. public  boolean supportTransactionalScopedBlobs()      Does the database (or the jdbc driver) supports transactional blob. public  boolean supportsCurrentTimestampSelection()      Does the database supports a query for the current timestamp. abstract public  boolean supportsForUpdate()      Does the database supports select ... public  boolean supportsIfExistsAfterTableName()      Does the database support "if exists" after the table name when constructing a sql drop for the table. public  boolean supportsIfExistsBeforeTableName()      Does the database support "if exists" before the table name when constructing a sql drop for the table. public  boolean supportsTableExists()      Does the dialect support a special query to check if a table exists. public  boolean useExistsBeforeInsertLock()      Do we need to perform a special check to see if the lock already exists in the database, or should we try and insert it without checking. public  boolean useInputStreamToInsertBlob()      Does the database require using an InputStream to insert a blob, or the setBlob method. Method Detail closeBlobSelectQuote public String closeBlobSelectQuote()(Code) Some database require quoting the blob in selects closeQuote public char closeQuote()(Code) The closing quote for a quoted identifier . Defaults to ". getBitType abstract public String getBitType()(Code) The database BIT type. getBlobType abstract public String getBlobType(long length)(Code) The database blob type for the given length. The length is in KB. getCascadeConstraintsString public String getCascadeConstraintsString()(Code) Completely optional cascading drop clause getCurrentTimestampFunction abstract public String getCurrentTimestampFunction()(Code) The database current timestamp function that is used with several sql updates. getCurrentTimestampSelectString public String getCurrentTimestampSelectString()(Code) The database current time stamp select query. getForUpdateNowaitString public String getForUpdateNowaitString()(Code) Does this dialect support the Oracle-style FOR UPDATE NOWAIT syntax? Defaults to Dialect.getForUpdateString() . getForUpdateString public String getForUpdateString()(Code) Does this dialect support the FOR UPDATE syntax? Defaults to for update. getNumberType abstract public String getNumberType()(Code) The database number type. getTableTypeString public String getTableTypeString()(Code) The type of the table that is created. Defaults to an empty string. getTimestampType abstract public String getTimestampType()(Code) The database TIMESTAMP type. getVarcharType abstract public String getVarcharType(int length)(Code) The database varchar type for the given length. The length is in chars. isCurrentTimestampSelectStringCallable public boolean isCurrentTimestampSelectStringCallable()(Code) If the current timestamp select queyr is a callable query or not. openBlobSelectQuote public String openBlobSelectQuote()(Code) Some database require quoting the blob in selects openQuote public char openQuote()(Code) The opening quote for a quoted identifier. Defaults to ". processSettings public void processSettings(JdbcDirectorySettings settings)(Code) Process settings and apply any dialect related changes. Defaults to do nothing. sqlTableExists public String sqlTableExists(String catalog, String schemaName)(Code) If the dialect support a special query to check if a table exists, the actual sql that is used to perform it. Defaults to throw an Unsupported excetion (see Dialect.supportsTableExists() . supportTransactionalScopedBlobs public boolean supportTransactionalScopedBlobs()(Code) Does the database (or the jdbc driver) supports transactional blob. Is so, can be used with the org.apache.lucene.store.jdbc.index.FetchPerTransactionJdbcIndexInput . Defaults to false. supportsCurrentTimestampSelection public boolean supportsCurrentTimestampSelection()(Code) Does the database supports a query for the current timestamp. Defaults to false. supportsForUpdate abstract public boolean supportsForUpdate()(Code) Does the database supports select ... for update sql clause? supportsIfExistsAfterTableName public boolean supportsIfExistsAfterTableName()(Code) Does the database support "if exists" after the table name when constructing a sql drop for the table. Defaults to false. supportsIfExistsBeforeTableName public boolean supportsIfExistsBeforeTableName()(Code) Does the database support "if exists" before the table name when constructing a sql drop for the table. Defaults to false. supportsTableExists public boolean supportsTableExists()(Code) Does the dialect support a special query to check if a table exists. Defaults to false. useExistsBeforeInsertLock public boolean useExistsBeforeInsertLock()(Code) Do we need to perform a special check to see if the lock already exists in the database, or should we try and insert it without checking. Defaults to true. useInputStreamToInsertBlob public boolean useInputStreamToInsertBlob()(Code) Does the database require using an InputStream to insert a blob, or the setBlob method. Defaults to true. Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)