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Java Standard Edition (SE)

SQLOutputImpl


compact3
javax.sql.rowset.serial

Class SQLOutputImpl

  • All Implemented Interfaces:
    SQLOutput


    public class SQLOutputImpl
    extends Object
    implements SQLOutput
    The output stream for writing the attributes of a custom-mapped user-defined type (UDT) back to the database. The driver uses this interface internally, and its methods are never directly invoked by an application programmer.

    When an application calls the method PreparedStatement.setObject, the driver checks to see whether the value to be written is a UDT with a custom mapping. If it is, there will be an entry in a type map containing the Class object for the class that implements SQLData for this UDT. If the value to be written is an instance of SQLData, the driver will create an instance of SQLOutputImpl and pass it to the method SQLData.writeSQL. The method writeSQL in turn calls the appropriate SQLOutputImpl.writeXXX methods to write data from the SQLData object to the SQLOutputImpl output stream as the representation of an SQL user-defined type.

    • Constructor Summary

      Constructors 
      Constructor and Description
      SQLOutputImpl(Vector<?> attributes, Map<String,?> map)
      Creates a new SQLOutputImpl object initialized with the given vector of attributes and type map.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      void writeArray(Array x)
      Writes an Array object in the Java programming language to this SQLOutputImpl object.
      void writeAsciiStream(InputStream x)
      Writes a stream of ASCII characters to this SQLOutputImpl object.
      void writeBigDecimal(BigDecimal x)
      Writes a java.math.BigDecimal object in the Java programming language to this SQLOutputImpl object.
      void writeBinaryStream(InputStream x)
      Writes a stream of uninterpreted bytes to this SQLOutputImpl object.
      void writeBlob(Blob x)
      Writes a Blob object in the Java programming language to this SQLOutputImpl object.
      void writeBoolean(boolean x)
      Writes a boolean in the Java programming language to this SQLOutputImpl object.
      void writeByte(byte x)
      Writes a byte in the Java programming language to this SQLOutputImpl object.
      void writeBytes(byte[] x)
      Writes an array of bytes in the Java programming language to this SQLOutputImpl object.
      void writeCharacterStream(Reader x)
      Writes a stream of Unicode characters to this SQLOutputImpl object.
      void writeClob(Clob x)
      Writes a Clob object in the Java programming language to this SQLOutputImpl object.
      void writeDate(Date x)
      Writes a java.sql.Date object in the Java programming language to this SQLOutputImpl object.
      void writeDouble(double x)
      Writes a double in the Java programming language to this SQLOutputImpl object.
      void writeFloat(float x)
      Writes a float in the Java programming language to this SQLOutputImpl object.
      void writeInt(int x)
      Writes an int in the Java programming language to this SQLOutputImpl object.
      void writeLong(long x)
      Writes a long in the Java programming language to this SQLOutputImpl object.
      void writeNClob(NClob x)
      Writes an SQL NCLOB value to the stream.
      void writeNString(String x)
      Writes the next attribute to the stream as a String in the Java programming language.
      void writeObject(SQLData x)
      Writes to the stream the data contained in the given SQLData object.
      void writeRef(Ref x)
      Writes a Ref object in the Java programming language to this SQLOutputImpl object.
      void writeRowId(RowId x)
      Writes an SQL ROWID value to the stream.
      void writeShort(short x)
      Writes a short in the Java programming language to this SQLOutputImpl object.
      void writeSQLXML(SQLXML x)
      Writes an SQL XML value to the stream.
      void writeString(String x)
      Writes a String in the Java programming language to this SQLOutputImpl object.
      void writeStruct(Struct x)
      Writes a Struct object in the Java programming language to this SQLOutputImpl object.
      void writeTime(Time x)
      Writes a java.sql.Time object in the Java programming language to this SQLOutputImpl object.
      void writeTimestamp(Timestamp x)
      Writes a java.sql.Timestamp object in the Java programming language to this SQLOutputImpl object.
      void writeURL(URL url)
      Writes an java.sql.Type.DATALINK object in the Java programming language to this SQLOutputImpl object.
    • Constructor Detail

      • SQLOutputImpl

        public SQLOutputImpl(Vector<?> attributes,
                             Map<String,?> map)
                      throws SQLException
        Creates a new SQLOutputImpl object initialized with the given vector of attributes and type map. The driver will use the type map to determine which SQLData.writeSQL method to invoke. This method will then call the appropriate SQLOutputImpl writer methods in order and thereby write the attributes to the new output stream.
        Parameters:
        attributes - a Vector object containing the attributes of the UDT to be mapped to one or more objects in the Java programming language
        map - a java.util.Map object containing zero or more entries, with each entry consisting of 1) a String giving the fully qualified name of a UDT and 2) the Class object for the SQLData implementation that defines how the UDT is to be mapped
        Throws:
        SQLException - if the attributes or the map is a null value
    • Method Detail

      • writeString

        public void writeString(String x)
                         throws SQLException
        Writes a String in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL CHAR, VARCHAR, or LONGVARCHAR before returning it to the database.
        Specified by:
        writeString in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeBoolean

        public void writeBoolean(boolean x)
                          throws SQLException
        Writes a boolean in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL BIT before returning it to the database.
        Specified by:
        writeBoolean in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeByte

        public void writeByte(byte x)
                       throws SQLException
        Writes a byte in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL BIT before returning it to the database.
        Specified by:
        writeByte in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeShort

        public void writeShort(short x)
                        throws SQLException
        Writes a short in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL SMALLINT before returning it to the database.
        Specified by:
        writeShort in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeInt

        public void writeInt(int x)
                      throws SQLException
        Writes an int in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL INTEGER before returning it to the database.
        Specified by:
        writeInt in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeLong

        public void writeLong(long x)
                       throws SQLException
        Writes a long in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL BIGINT before returning it to the database.
        Specified by:
        writeLong in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeFloat

        public void writeFloat(float x)
                        throws SQLException
        Writes a float in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL REAL before returning it to the database.
        Specified by:
        writeFloat in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeDouble

        public void writeDouble(double x)
                         throws SQLException
        Writes a double in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL DOUBLE before returning it to the database.
        Specified by:
        writeDouble in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeBigDecimal

        public void writeBigDecimal(BigDecimal x)
                             throws SQLException
        Writes a java.math.BigDecimal object in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL NUMERIC before returning it to the database.
        Specified by:
        writeBigDecimal in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeBytes

        public void writeBytes(byte[] x)
                        throws SQLException
        Writes an array of bytes in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL VARBINARY or LONGVARBINARY before returning it to the database.
        Specified by:
        writeBytes in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeDate

        public void writeDate(Date x)
                       throws SQLException
        Writes a java.sql.Date object in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL DATE before returning it to the database.
        Specified by:
        writeDate in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeTime

        public void writeTime(Time x)
                       throws SQLException
        Writes a java.sql.Time object in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL TIME before returning it to the database.
        Specified by:
        writeTime in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeTimestamp

        public void writeTimestamp(Timestamp x)
                            throws SQLException
        Writes a java.sql.Timestamp object in the Java programming language to this SQLOutputImpl object. The driver converts it to an SQL TIMESTAMP before returning it to the database.
        Specified by:
        writeTimestamp in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeCharacterStream

        public void writeCharacterStream(Reader x)
                                  throws SQLException
        Writes a stream of Unicode characters to this SQLOutputImpl object. The driver will do any necessary conversion from Unicode to the database CHAR format.
        Specified by:
        writeCharacterStream in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeAsciiStream

        public void writeAsciiStream(InputStream x)
                              throws SQLException
        Writes a stream of ASCII characters to this SQLOutputImpl object. The driver will do any necessary conversion from ASCII to the database CHAR format.
        Specified by:
        writeAsciiStream in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeBinaryStream

        public void writeBinaryStream(InputStream x)
                               throws SQLException
        Writes a stream of uninterpreted bytes to this SQLOutputImpl object.
        Specified by:
        writeBinaryStream in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeObject

        public void writeObject(SQLData x)
                         throws SQLException
        Writes to the stream the data contained in the given SQLData object. When the SQLData object is null, this method writes an SQL NULL to the stream. Otherwise, it calls the SQLData.writeSQL method of the given object, which writes the object's attributes to the stream.

        The implementation of the method SQLData.writeSQ calls the appropriate SQLOutputImpl.writeXXX method(s) for writing each of the object's attributes in order. The attributes must be read from an SQLInput input stream and written to an SQLOutputImpl output stream in the same order in which they were listed in the SQL definition of the user-defined type.

        Specified by:
        writeObject in interface SQLOutput
        Parameters:
        x - the object representing data of an SQL structured or distinct type
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeRef

        public void writeRef(Ref x)
                      throws SQLException
        Writes a Ref object in the Java programming language to this SQLOutputImpl object. The driver converts it to a serializable SerialRef SQL REF value before returning it to the database.
        Specified by:
        writeRef in interface SQLOutput
        Parameters:
        x - an object representing an SQL REF value
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeBlob

        public void writeBlob(Blob x)
                       throws SQLException
        Writes a Blob object in the Java programming language to this SQLOutputImpl object. The driver converts it to a serializable SerialBlob SQL BLOB value before returning it to the database.
        Specified by:
        writeBlob in interface SQLOutput
        Parameters:
        x - an object representing an SQL BLOB value
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeClob

        public void writeClob(Clob x)
                       throws SQLException
        Writes a Clob object in the Java programming language to this SQLOutputImpl object. The driver converts it to a serializable SerialClob SQL CLOB value before returning it to the database.
        Specified by:
        writeClob in interface SQLOutput
        Parameters:
        x - an object representing an SQL CLOB value
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeStruct

        public void writeStruct(Struct x)
                         throws SQLException
        Writes a Struct object in the Java programming language to this SQLOutputImpl object. The driver converts this value to an SQL structured type before returning it to the database.

        This method should be used when an SQL structured type has been mapped to a Struct object in the Java programming language (the standard mapping). The method writeObject should be used if an SQL structured type has been custom mapped to a class in the Java programming language.

        Specified by:
        writeStruct in interface SQLOutput
        Parameters:
        x - an object representing the attributes of an SQL structured type
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeArray

        public void writeArray(Array x)
                        throws SQLException
        Writes an Array object in the Java programming language to this SQLOutputImpl object. The driver converts this value to a serializable SerialArray SQL ARRAY value before returning it to the database.
        Specified by:
        writeArray in interface SQLOutput
        Parameters:
        x - an object representing an SQL ARRAY value
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeURL

        public void writeURL(URL url)
                      throws SQLException
        Writes an java.sql.Type.DATALINK object in the Java programming language to this SQLOutputImpl object. The driver converts this value to a serializable SerialDatalink SQL DATALINK value before return it to the database.
        Specified by:
        writeURL in interface SQLOutput
        Parameters:
        url - an object representing a SQL DATALINK value
        Throws:
        SQLException - if the SQLOutputImpl object is in use by a SQLData object attempting to write the attribute values of a UDT to the database.
      • writeNString

        public void writeNString(String x)
                          throws SQLException
        Writes the next attribute to the stream as a String in the Java programming language. The driver converts this to a SQL NCHAR or NVARCHAR or LONGNVARCHAR value (depending on the argument's size relative to the driver's limits on NVARCHAR values) when it sends it to the stream.
        Specified by:
        writeNString in interface SQLOutput
        Parameters:
        x - the value to pass to the database
        Throws:
        SQLException - if a database access error occurs
        Since:
        1.6
      • writeNClob

        public void writeNClob(NClob x)
                        throws SQLException
        Writes an SQL NCLOB value to the stream.
        Specified by:
        writeNClob in interface SQLOutput
        Parameters:
        x - a NClob object representing data of an SQL NCLOB value
        Throws:
        SQLException - if a database access error occurs
        Since:
        1.6
      • writeRowId

        public void writeRowId(RowId x)
                        throws SQLException
        Writes an SQL ROWID value to the stream.
        Specified by:
        writeRowId in interface SQLOutput
        Parameters:
        x - a RowId object representing data of an SQL ROWID value
        Throws:
        SQLException - if a database access error occurs
        Since:
        1.6
      • writeSQLXML

        public void writeSQLXML(SQLXML x)
                         throws SQLException
        Writes an SQL XML value to the stream.
        Specified by:
        writeSQLXML in interface SQLOutput
        Parameters:
        x - a SQLXML object representing data of an SQL XML value
        Throws:
        SQLException - if a database access error occurs
        Since:
        1.6


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