oracle.sql
Class StructDescriptor

java.lang.Object
  oracle.sql.TypeDescriptor
      oracle.sql.StructDescriptor

All Implemented Interfaces:

java.io.Serializable

public class StructDescriptor

extends TypeDescriptor

implements java.io.Serializable

Descriptor of a SQL structured object. (That is an SQL Object type). Its main responsibility is understanding how to convert between various representations of such a struct.

There should be a method to return information about the fields (beyond their number. But there is no public representation for that.

See Also:

Serialized Form

Field Summary

static java.lang.String	BUILD_DATE
static boolean	PRIVATE_TRACE
static boolean	TRACE

Fields inherited from class oracle.sql.TypeDescriptor

DEBUG_SERIALIZATION

Method Summary

static StructDescriptor	createDescriptor(java.lang.String name, java.sql.Connection conn) Descriptor factory.
java.lang.String	descType() Describe this type.
java.lang.String	getJavaClassName() Returns the external name of the JAVA_STRUCT type.
java.lang.String	getLanguage()
int	getLength() The number of fields in the Object Type.
int	getLocalAttributeCount() Returns the number of attributes defined in the subtype.
java.sql.ResultSetMetaData	getMetaData() Gets the metadata regarding this type.
java.lang.String[]	getSubtypeNames() Returns the SQL type names of the direct subtypes.
java.lang.String	getSupertypeName() Returns the SQL type name of the direct subtype.
int	getTypeCode()
int	getTypeVersion()
boolean	isFinalType() Indicates whether the object type is a final type.
boolean	isInstantiable() Indicates whether the object type is instantiable.
boolean	isJavaObject() Indicates whether the object type is a JAVA_STRUCT type or a STRUCT type.
boolean	isSubtype() Indicates whether the object type is a subtype.
Datum[]	toOracleArray(java.util.Map attributes)

Methods inherited from class oracle.sql.TypeDescriptor

getName, getSubtypeName, setConnection

Methods inherited from class java.lang.Object

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

Field Detail

TRACE

public static final boolean TRACE

See Also:

Constant Field Values

PRIVATE_TRACE

public static final boolean PRIVATE_TRACE

See Also:

Constant Field Values

BUILD_DATE

public static final java.lang.String BUILD_DATE

See Also:

Constant Field Values

Method Detail

createDescriptor

public static StructDescriptor createDescriptor(java.lang.String name,
                                                java.sql.Connection conn)
                                         throws java.sql.SQLException

Descriptor factory. Lookup the name in the database, and determine the characteristics of this array.

Parameters:

name - a String naming the type. (Not necessarily fully qualified)

Throws:

java.sql.SQLException

getTypeCode

public int getTypeCode()
                throws java.sql.SQLException

Throws:

java.sql.SQLException

getTypeVersion

public int getTypeVersion()
                   throws java.sql.SQLException

Throws:

java.sql.SQLException

getLength

public int getLength()
              throws java.sql.SQLException

The number of fields in the Object Type.

Returns:

the size.

Throws:

java.sql.SQLException

toOracleArray

public Datum[] toOracleArray(java.util.Map attributes)
                      throws java.sql.SQLException

Throws:

java.sql.SQLException

getMetaData

public java.sql.ResultSetMetaData getMetaData()
                                       throws java.sql.SQLException

Gets the metadata regarding this type. The return ResultSetMetaData contains the attribute name, attribute type id and attribute type precision information. The column index in ResultSetMetaData maps to the position of the attribute in a Struct (with the first attribute being at index 1).

Returns:

a ResultSetMetaData object that contains the type info

Throws:

if - database access error occurs

java.sql.SQLException

isFinalType

public boolean isFinalType()
                    throws java.sql.SQLException

Indicates whether the object type is a final type.

Returns:

true if the object type is a final type and false otherwise.

Throws:

java.sql.SQLException

Since:

8.2.0

isSubtype

public boolean isSubtype()
                  throws java.sql.SQLException

Indicates whether the object type is a subtype.

Returns:

true if the object type is a subtype and false otherwise.

Throws:

java.sql.SQLException

Since:

8.2.0

isInstantiable

public boolean isInstantiable()
                       throws java.sql.SQLException

Indicates whether the object type is instantiable.

Returns:

true if the object type is instantiable and false otherwise.

Throws:

java.sql.SQLException

Since:

8.2.0

isJavaObject

public boolean isJavaObject()
                     throws java.sql.SQLException

Indicates whether the object type is a JAVA_STRUCT type or a STRUCT type.

Returns:

true if the object type is a JAVA_STRUCT type and false if the object type is a STRUCT type.

Throws:

java.sql.SQLException

Since:

8.2.0

getSupertypeName

public java.lang.String getSupertypeName()
                                  throws java.sql.SQLException

Returns the SQL type name of the direct subtype.

Returns:

the fully qualified name of the supertype. Returns null if the object type is not a subtype.

Throws:

java.sql.SQLException

Since:

8.2.0

getLocalAttributeCount

public int getLocalAttributeCount()
                           throws java.sql.SQLException

Returns the number of attributes defined in the subtype.

Returns:

number of subtype attributes.

Throws:

java.sql.SQLException

Since:

8.2.0

getSubtypeNames

public java.lang.String[] getSubtypeNames()
                                   throws java.sql.SQLException

Returns the SQL type names of the direct subtypes.

Returns:

the fully qualifed name of the direct subtypes. Returns an empty String array if there is no subtypes.

Throws:

java.sql.SQLException

Since:

8.2.0

getJavaClassName

public java.lang.String getJavaClassName()
                                  throws java.sql.SQLException

Returns the external name of the JAVA_STRUCT type.

Returns:

the JAVA_STRUCT's Java type name. Returns null if the object type is not a JAVA_STRUCT type.

Throws:

java.sql.SQLException

Since:

8.2.0

getLanguage

public java.lang.String getLanguage()
                             throws java.sql.SQLException

Returns:

JAVA if this is a JAVA_STRUCT, SQL otherwise

Throws:

java.sql.SQLException

Since:

8.2.0

descType

public java.lang.String descType()
                          throws java.sql.SQLException

Describe this type.

Returns:

the type information.

Throws:

java.sql.SQLException