Package org.postgresql.pljava.jdbc
package org.postgresql.pljava.jdbc
PL/Java's specialized JDBC implementation that interacts directly with the
backend over SPI.
Some classes and methods here have departures from strict JDBC behavior that should be covered in their javadoc, or resolved; for now, comments in the code may be helpful in case of any question.
- Author:
- Thomas Hallgren
-
ClassDescriptionThe
AbstractResultSetserves as a base class for implementations of theResultSetinterface.Implementation of ResultSetMetaData for SyntheticResultSetImplementation ofBlobfor the SPI connection.PostgreSQL builtin functionsImplementation ofClobfor the SPI connection.Implements most getters in terms ofObjectResultSet.getValue(int, java.lang.Class<T>),ObjectResultSet.getNumber(int, java.lang.Class), or a few otherResultSetgetters that are so implemented, trackswasNull, and providesObjectResultSet.getObjectValue(int)as the chief method for subclasses to implement; turns most updaters intoResultSet.updateObject(int,Object).An adapter presenting PostgreSQL'spg_node_treetype (a serialized representation of a tree data structure) through the XML API (in, currently, an ad-hoc, schemaless rendering, but one with which some practical use might be made of the information, after a little study).Implements all methods that change the ResultSet in any way as methods that yield anUnsupportedFeatureException.Provides methods that are common both for a SyntheticResultSet (which is not associated with a statement) and SPIResultSet.Representation of a field to be presented in aSyntheticResultSet.A single row, read-only ResultSet, specially made for functions and procedures that takes complex types as arguments (PostgreSQL 7.5 and later).A single row ResultSetA single row, updateable ResultSet, specially made for functions and procedures that returns complex types or sets.Provides access to the current connection (session) the Java stored procedure is running in.Implementation ofDatabaseMetaDatafor the SPI connection.Implementation ofDriverfor the SPI connection.Implementation ofParameterMetaDatafor the SPI connection.Implementation ofPreparedStatementfor the SPI connection.An extended interface onStatement(accessible withunwrap()) allowing control of theread_onlyflag that PostgreSQL SPI will see when the statement is next executed.A Read-only ResultSet that provides direct access to aPortal.Implementation of ResultSetMetaData for SPIResultSetImplementation ofStatementfor the SPI connection.The SQLInputToChunk uses JNI to read from memory that has been allocated by the PostgreSQL backend.Implements theSQLInputinterface for a user-defined type (UDT) implemented in Java, for the case where a composite type in PostgreSQL is used as the UDT's representation, so it can be accessed as a PG tuple.The SQLOutputToChunk uses JNI to build a PostgreSQL StringInfo buffer in memory.Implementation ofSQLOutputfor the case of a composite data type.Helpful utility commands when dealing with JDBCSQLXMLImpl<V extends Datum>Implementation ofSQLXMLfor the SPI connection.AnSQLExceptionspecific to the case of attempted use of aStatementthat has been closed.A Synthetic ResultSet that provides direct access to data stored in aArrayList; chiefly used to return tabular information from...MetaDataobjects.Implementation of ResultSetMetaData for SyntheticResultSetA single row, updateable ResultSet specially made for triggers.TypeBridge<S>Encapsulate some information about Java object classes and their possible mappings to PostgreSQL types.Provides constants for well-known backend OIDs for the types we commonly use.AnSQLExceptionspecific to the case of attempted use of an unsupported feature.