com.impossibl.postgres.system.tables

Interface Table<R extends Table.Row>

Type Parameters:

R - The row type this table uses

All Known Implementing Classes:

PGTypeTable

public interface Table<R extends Table.Row>

A system table object. Providing a POJO type for the row and some matching SQL and a list of instances can be fetched from the database with no other work. This is used for system queries.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Table.Row

Method Summary

Modifier and Type	Method and Description
R	createRow(Context context, ResultBatch resultBatch, int rowIdx) Creates and instance of the row type of this table.
static <T> T	getFieldOfRow(ResultBatch resultBatch, int rowIdx, int fieldIdx, Context context, Class<T> targetType)
String	getSQL(Version currentVersion) Returns the SQL that is needed to load all rows of this table.
default List<R>	query(BasicContext context, String queryTxt, long timeout, Object... params)

Method Detail

getSQL

String getSQL(Version currentVersion)

Returns the SQL that is needed to load all rows of this table.

Parameters:

currentVersion - Current version of the server that will execute it

Returns:

SQL text of the query

createRow

R createRow(Context context,
            ResultBatch resultBatch,
            int rowIdx)
     throws IOException

Creates and instance of the row type of this table.

Returns:

An instance of the table's row type

Throws:

IOException

query

default List<R> query(BasicContext context,
                      String queryTxt,
                      long timeout,
                      Object... params)
               throws IOException

Throws:

IOException

getFieldOfRow

static <T> T getFieldOfRow(ResultBatch resultBatch,
                           int rowIdx,
                           int fieldIdx,
                           Context context,
                           Class<T> targetType)
                    throws IOException

Throws:

IOException