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| java.sql.SQLInput |
The SQLInput interface defines operations which apply to a type of
input stream which carries a series of values representing an instance of
an SQL structured type or SQL distinct type.
This interface is used to define custom mappings of SQL User Defined
Types (UDTs) to Java classes. It is used by JDBC drivers, therefore
application programmers do not normally use the SQLInput methods
directly. Reader methods such as readLong and readBytes
provide means to read values from an SQLInput stream.
When the getObject method is called with an object which implements
the SQLData interface, the JDBC driver determines the SQL type of the
UDT being mapped by calling the SQLData.getSQLType method. The driver
creates an instance of an SQLInput stream, filling the stream with
the attributes of the UDT. The SQLInput stream is passed to the
SQLData.readSQL method which then calls the SQLInput reader
methods to read the attributes.
| Public Methods | |||||||||||
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Returns the next attribute in the stream in the form of a
java.sql.Array.
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Returns the next attribute in the stream in the form of an ASCII
character stream embodied as a
java.io.InputStream.
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Returns the next attribute in the stream in the form of a
java.math.BigDecimal.
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Returns the next attribute in the stream in the form of a stream of bytes
embodied as a
java.io.InputStream.
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Returns the next attribute in the stream in the form of a
java.sql.Blob.
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Returns the next attribute in the stream in the form of a
boolean
.
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Returns the next attribute in the stream in the form of a
byte.
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Returns the next attribute in the stream in the form of a byte array.
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Returns the next attribute in the stream in the form of a Unicode
character stream embodied as a
java.io.Reader.
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Returns the next attribute in the stream in the form of a
java.sql.Clob.
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Returns the next attribute in the stream in the form of a
java.sql.Date.
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Returns the next attribute in the stream in the form of a
double.
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Returns the next attribute in the stream in the form of a
float.
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Returns the next attribute in the stream in the form of an
int.
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Returns the next attribute in the stream in the form of a
long.
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Returns the next attribute in the stream in the form of a
java.sql.NClob.
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Returns the next attribute in the stream in the form of a
java.lang.String.
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Returns the next attribute in the stream in the form of a
java.lang.Object.
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Returns the next attribute in the stream in the form of a
java.sql.Ref.
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Returns the next attribute in the stream in the form of a
java.sql.RowId.
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Returns the next attribute in the stream in the form of a
java.sql.SQLXML.
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Returns the next attribute in the stream in the form of a
short.
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Returns the next attribute in the stream in the form of a
String.
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Returns the next attribute in the stream in the form of a
java.sql.Time.
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Returns the next attribute in the stream in the form of a
java.sql.Timestamp.
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Reads the next attribute in the stream (SQL DATALINK value) and returns
it as a
java.net.URL object.
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Reports whether the last value read was SQL
NULL.
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Returns the next attribute in the stream in the form of a java.sql.Array.
Array. null if the value
is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of an ASCII
character stream embodied as a java.io.InputStream.
java.io.InputStream. null
if the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.math.BigDecimal.
java.math.BigDecimal. null if
the read returns SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a stream of bytes
embodied as a java.io.InputStream.
java.io.InputStream. null
if the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.Blob.
java.sql.Blob. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a boolean
.
boolean. false if the
value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a byte.
byte. 0 if the value is SQL
NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a byte array.
null if the read returns
SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a Unicode
character stream embodied as a java.io.Reader.
java.io.Reader. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.Clob.
java.sql.Clob. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.Date.
java.sql.Date. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a double.
double. 0 if the value is SQL
NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a float.
float. 0 if the value is SQL
NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of an int.
int. 0 if the value is SQL
NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a long.
long. 0 if the value is SQL
NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.NClob.
java.sql.NClob. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.lang.String. Used for the NCHAR, NVARCHAR and LONGNVARCHAR types.
See readString() otherwise.
java.lang.String. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.lang.Object.
The type of the Object returned is determined by the type mapping
for this JDBC driver, including any customized mappings, if present. A
type map is given to the SQLInput by the JDBC driver before the
SQLInput is given to the application.
If the attribute is an SQL structured or distinct type, its SQL type is
determined. If the stream's type map contains an element for that SQL
type, the driver creates an object for the relevant type and invokes the
method SQLData.readSQL on it, which reads supplementary data from
the stream using whichever protocol is defined for that method.
null if the value is SQL
NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.Ref.
java.sql.Ref. null if the
value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.RowId. Used for the ROWID type.
java.sql.RowId. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.SQLXML.
java.sql.SQLXML. null if
the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a short.
short. 0 if the value is SQL
NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a String.
null if the value is SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.Time.
java.sql.Time. null if the
read returns SQL NULL.| SQLException | if there is a database error. |
|---|
Returns the next attribute in the stream in the form of a java.sql.Timestamp.
java.sql.Timestamp. null if
the read returns SQL NULL.| SQLException | if there is a database error. |
|---|
Reads the next attribute in the stream (SQL DATALINK value) and returns
it as a java.net.URL object.
java.net.URL. null if the
value is SQL NULL.| SQLException | if there is a database error. |
|---|
Reports whether the last value read was SQL NULL.
true if the last value read was SQL NULL, false otherwise.| SQLException | if there is a database error. |
|---|