org.postgresql.jdbc2
Class TypeInfoCache

java.lang.Object
  org.postgresql.jdbc2.TypeInfoCache

All Implemented Interfaces:

TypeInfo

public class TypeInfoCache
extends Object
implements TypeInfo

Constructor Summary

TypeInfoCache(BaseConnection conn, int unknownLength)

Method Summary

void	addCoreType(String pgTypeName, Integer oid, Integer sqlType, String javaClass, Integer arrayOid)
void	addDataType(String type, Class klass)
protected int	convertArrayToBaseOid(int oid) Return the oid of the array's base element if it's an array, if not return the provided oid.
char	getArrayDelimiter(int oid) Determine the delimiter for the elements of the given array type oid.
int	getDisplaySize(int oid, int typmod)
String	getJavaClass(int oid)
int	getMaximumPrecision(int oid)
int	getPGArrayElement(int oid) Look up the oid of an array's base type given the array's type oid.
int	getPGArrayType(String elementTypeName) Determine the oid of the given base postgresql type's array type
Class	getPGobject(String type)
String	getPGType(int oid) Look up the postgresql type name for a given oid.
int	getPGType(String pgTypeName) Look up the oid for a given postgresql type name.
Iterator	getPGTypeNamesWithSQLTypes()
int	getPrecision(int oid, int typmod)
int	getScale(int oid, int typmod)
int	getSQLType(int oid) Look up the SQL typecode for a given type oid.
int	getSQLType(String pgTypeName) Look up the SQL typecode for a given postgresql type name.
String	getTypeForAlias(String alias)
boolean	isCaseSensitive(int oid)
boolean	isSigned(int oid)
boolean	requiresQuoting(int oid)

Methods inherited from class java.lang.Object

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

Constructor Detail

TypeInfoCache

public TypeInfoCache(BaseConnection conn,
                     int unknownLength)

Method Detail

addCoreType

public void addCoreType(String pgTypeName,
                        Integer oid,
                        Integer sqlType,
                        String javaClass,
                        Integer arrayOid)

Specified by:

addCoreType in interface TypeInfo

addDataType

public void addDataType(String type,
                        Class klass)
                 throws SQLException

Specified by:

addDataType in interface TypeInfo

Throws:

SQLException

getPGTypeNamesWithSQLTypes

public Iterator getPGTypeNamesWithSQLTypes()

Specified by:

getPGTypeNamesWithSQLTypes in interface TypeInfo

getSQLType

public int getSQLType(int oid)
               throws SQLException

Description copied from interface: TypeInfo

Look up the SQL typecode for a given type oid.

Specified by:

getSQLType in interface TypeInfo

Parameters:

oid - the type's OID

Returns:

the SQL type code (a constant from Types) for the type

Throws:

SQLException

getSQLType

public int getSQLType(String pgTypeName)
               throws SQLException

Description copied from interface: TypeInfo

Look up the SQL typecode for a given postgresql type name.

Specified by:

getSQLType in interface TypeInfo

Parameters:

pgTypeName - the server type name to look up

Returns:

the SQL type code (a constant from Types) for the type

Throws:

SQLException

getPGType

public int getPGType(String pgTypeName)
              throws SQLException

Description copied from interface: TypeInfo

Look up the oid for a given postgresql type name. This is the inverse of TypeInfo.getPGType(int).

Specified by:

getPGType in interface TypeInfo

Parameters:

pgTypeName - the server type name to look up

Returns:

the type's OID, or 0 if unknown

Throws:

SQLException

getPGType

public String getPGType(int oid)
                 throws SQLException

Description copied from interface: TypeInfo

Look up the postgresql type name for a given oid. This is the inverse of TypeInfo.getPGType(String).

Specified by:

getPGType in interface TypeInfo

Parameters:

oid - the type's OID

Returns:

the server type name for that OID or null if unknown

Throws:

SQLException

getPGArrayType

public int getPGArrayType(String elementTypeName)
                   throws SQLException

Description copied from interface: TypeInfo

Determine the oid of the given base postgresql type's array type

Specified by:

getPGArrayType in interface TypeInfo

Parameters:

elementTypeName - the base type's

Returns:

the array type's OID, or 0 if unknown

Throws:

SQLException

convertArrayToBaseOid

protected int convertArrayToBaseOid(int oid)

Return the oid of the array's base element if it's an array, if not return the provided oid. This doesn't do any database lookups, so it's only useful for the originally provided type mappings. This is fine for it's intended uses where we only have intimate knowledge of types that are already known to the driver.

getArrayDelimiter

public char getArrayDelimiter(int oid)
                       throws SQLException

Description copied from interface: TypeInfo

Determine the delimiter for the elements of the given array type oid.

Specified by:

getArrayDelimiter in interface TypeInfo

Parameters:

oid - the array type's OID

Returns:

the base type's array type delimiter

Throws:

SQLException

getPGArrayElement

public int getPGArrayElement(int oid)
                      throws SQLException

Description copied from interface: TypeInfo

Look up the oid of an array's base type given the array's type oid.

Specified by:

getPGArrayElement in interface TypeInfo

Parameters:

oid - the array type's OID

Returns:

the base type's OID, or 0 if unknown

Throws:

SQLException

getPGobject

public Class getPGobject(String type)

Specified by:

getPGobject in interface TypeInfo

getJavaClass

public String getJavaClass(int oid)
                    throws SQLException

Specified by:

getJavaClass in interface TypeInfo

Throws:

SQLException

getTypeForAlias

public String getTypeForAlias(String alias)

Specified by:

getTypeForAlias in interface TypeInfo

getPrecision

public int getPrecision(int oid,
                        int typmod)

Specified by:

getPrecision in interface TypeInfo

getScale

public int getScale(int oid,
                    int typmod)

Specified by:

getScale in interface TypeInfo

isCaseSensitive

public boolean isCaseSensitive(int oid)

Specified by:

isCaseSensitive in interface TypeInfo

isSigned

public boolean isSigned(int oid)

Specified by:

isSigned in interface TypeInfo

getDisplaySize

public int getDisplaySize(int oid,
                          int typmod)

Specified by:

getDisplaySize in interface TypeInfo

getMaximumPrecision

public int getMaximumPrecision(int oid)

Specified by:

getMaximumPrecision in interface TypeInfo

requiresQuoting

public boolean requiresQuoting(int oid)
                        throws SQLException

Specified by:

requiresQuoting in interface TypeInfo

Throws:

SQLException