Package org.postgresql.jdbc
Class TypeInfoCache
- java.lang.Object
-
- org.postgresql.jdbc.TypeInfoCache
-
-
Constructor Summary
Constructors Constructor Description TypeInfoCache(BaseConnection conn, int unknownLength)
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
addCoreType(java.lang.String pgTypeName, java.lang.Integer oid, java.lang.Integer sqlType, java.lang.String javaClass, java.lang.Integer arrayOid)
void
addDataType(java.lang.String type, java.lang.Class<? extends PGobject> klass)
void
cacheSQLTypes()
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)
java.lang.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(java.lang.String elementTypeName)
Determine the oid of the given base postgresql type's array type.java.lang.Class<? extends PGobject>
getPGobject(java.lang.String type)
java.lang.String
getPGType(int oid)
Look up the postgresql type name for a given oid.int
getPGType(java.lang.String pgTypeName)
Look up the oid for a given postgresql type name.java.util.Iterator<java.lang.String>
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(java.lang.String pgTypeName)
Look up the SQL typecode for a given postgresql type name.java.lang.String
getTypeForAlias(java.lang.String alias)
boolean
isCaseSensitive(int oid)
boolean
isSigned(int oid)
boolean
requiresQuoting(int oid)
boolean
requiresQuotingSqlType(int sqlType)
Returns true if particular sqlType requires quoting.
-
-
-
Constructor Detail
-
TypeInfoCache
public TypeInfoCache(BaseConnection conn, int unknownLength)
-
-
Method Detail
-
addCoreType
public void addCoreType(java.lang.String pgTypeName, java.lang.Integer oid, java.lang.Integer sqlType, java.lang.String javaClass, java.lang.Integer arrayOid)
- Specified by:
addCoreType
in interfaceTypeInfo
-
addDataType
public void addDataType(java.lang.String type, java.lang.Class<? extends PGobject> klass) throws java.sql.SQLException
- Specified by:
addDataType
in interfaceTypeInfo
- Throws:
java.sql.SQLException
-
getPGTypeNamesWithSQLTypes
public java.util.Iterator<java.lang.String> getPGTypeNamesWithSQLTypes()
- Specified by:
getPGTypeNamesWithSQLTypes
in interfaceTypeInfo
-
cacheSQLTypes
public void cacheSQLTypes() throws java.sql.SQLException
- Throws:
java.sql.SQLException
-
getSQLType
public int getSQLType(int oid) throws java.sql.SQLException
Description copied from interface:TypeInfo
Look up the SQL typecode for a given type oid.- Specified by:
getSQLType
in interfaceTypeInfo
- Parameters:
oid
- the type's OID- Returns:
- the SQL type code (a constant from
Types
) for the type - Throws:
java.sql.SQLException
- if an error occurs when retrieving sql type
-
getSQLType
public int getSQLType(java.lang.String pgTypeName) throws java.sql.SQLException
Description copied from interface:TypeInfo
Look up the SQL typecode for a given postgresql type name.- Specified by:
getSQLType
in interfaceTypeInfo
- Parameters:
pgTypeName
- the server type name to look up- Returns:
- the SQL type code (a constant from
Types
) for the type - Throws:
java.sql.SQLException
- if an error occurs when retrieving sql type
-
getPGType
public int getPGType(java.lang.String pgTypeName) throws java.sql.SQLException
Description copied from interface:TypeInfo
Look up the oid for a given postgresql type name. This is the inverse ofTypeInfo.getPGType(int)
.
-
getPGType
public java.lang.String getPGType(int oid) throws java.sql.SQLException
Description copied from interface:TypeInfo
Look up the postgresql type name for a given oid. This is the inverse ofTypeInfo.getPGType(String)
.
-
getPGArrayType
public int getPGArrayType(java.lang.String elementTypeName) throws java.sql.SQLException
Description copied from interface:TypeInfo
Determine the oid of the given base postgresql type's array type.- Specified by:
getPGArrayType
in interfaceTypeInfo
- Parameters:
elementTypeName
- the base type's- Returns:
- the array type's OID, or 0 if unknown
- Throws:
java.sql.SQLException
- if an error occurs when retrieving array type
-
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.- Parameters:
oid
- input oid- Returns:
- oid of the array's base element or the provided oid (if not array)
-
getArrayDelimiter
public char getArrayDelimiter(int oid) throws java.sql.SQLException
Description copied from interface:TypeInfo
Determine the delimiter for the elements of the given array type oid.- Specified by:
getArrayDelimiter
in interfaceTypeInfo
- Parameters:
oid
- the array type's OID- Returns:
- the base type's array type delimiter
- Throws:
java.sql.SQLException
- if an error occurs when retrieving array delimiter
-
getPGArrayElement
public int getPGArrayElement(int oid) throws java.sql.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 interfaceTypeInfo
- Parameters:
oid
- the array type's OID- Returns:
- the base type's OID, or 0 if unknown
- Throws:
java.sql.SQLException
- if an error occurs when retrieving array element
-
getPGobject
public java.lang.Class<? extends PGobject> getPGobject(java.lang.String type)
- Specified by:
getPGobject
in interfaceTypeInfo
-
getJavaClass
public java.lang.String getJavaClass(int oid) throws java.sql.SQLException
- Specified by:
getJavaClass
in interfaceTypeInfo
- Throws:
java.sql.SQLException
-
getTypeForAlias
public java.lang.String getTypeForAlias(java.lang.String alias)
- Specified by:
getTypeForAlias
in interfaceTypeInfo
-
getPrecision
public int getPrecision(int oid, int typmod)
- Specified by:
getPrecision
in interfaceTypeInfo
-
isCaseSensitive
public boolean isCaseSensitive(int oid)
- Specified by:
isCaseSensitive
in interfaceTypeInfo
-
getDisplaySize
public int getDisplaySize(int oid, int typmod)
- Specified by:
getDisplaySize
in interfaceTypeInfo
-
getMaximumPrecision
public int getMaximumPrecision(int oid)
- Specified by:
getMaximumPrecision
in interfaceTypeInfo
-
requiresQuoting
public boolean requiresQuoting(int oid) throws java.sql.SQLException
- Specified by:
requiresQuoting
in interfaceTypeInfo
- Throws:
java.sql.SQLException
-
requiresQuotingSqlType
public boolean requiresQuotingSqlType(int sqlType) throws java.sql.SQLException
Returns true if particular sqlType requires quoting. This method is used internally by the driver, so it might disappear without notice.- Specified by:
requiresQuotingSqlType
in interfaceTypeInfo
- Parameters:
sqlType
- sql type as in java.sql.Types- Returns:
- true if the type requires quoting
- Throws:
java.sql.SQLException
- if something goes wrong
-
-