sqlinputimpl.java

来自「Mobile 应用程序使用 Java Micro Edition (Java M」· Java 代码 · 共 813 行 · 第 1/3 页

     * Retrieves the next attribute in this <code>SQLInputImpl</code> object
     * as a <code>long</code> in the Java programming language.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type; this responsibility is delegated
     * to the UDT mapping as defined by a <code>SQLData</code> implementation.
     * <P>
     * @return the next attribute in this <code>SQLInputImpl</code> object;
     *       if the value is <code>SQL NULL</code>, return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     *       position or if there are no more values in the stream 
     */
    public long readLong() throws SQLException {
        Long attrib = (Long)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return (long)0;
        } else {
            lastValueWasNull = false;
            return attrib.longValue();
        }
    }

    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> object
     * as a <code>float</code> in the Java programming language.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type; this responsibility is delegated
     * to the UDT mapping as defined by a <code>SQLData</code> implementation.
     * <P>
     * @return the next attribute in this <code>SQLInputImpl</code> object;
     *       if the value is <code>SQL NULL</code>, return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     *       position or if there are no more values in the stream 
     */
    public float readFloat() throws SQLException {
        Float attrib = (Float)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return (float)0;
        } else {
            lastValueWasNull = false;
            return attrib.floatValue();
        }
    }

    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> object
     * as a <code>double</code> in the Java programming language.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type; this responsibility is delegated
     * to the UDT mapping as defined by a <code>SQLData</code> implementation.
     * <P>
     * @return the next attribute in this <code>SQLInputImpl</code> object;
     *       if the value is <code>SQL NULL</code>, return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     *       position or if there are no more values in the stream 
     */
    public double readDouble() throws SQLException {
        Double attrib = (Double)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return (double)0;
        } else {
            lastValueWasNull = false;
            return attrib.doubleValue();
        }
    }

    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> object 
     * as a <code>java.math.BigDecimal</code>.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type; this responsibility is delegated
     * to the UDT mapping as defined by a <code>SQLData</code> implementation.
     * <P>
     * @return the next attribute in this <code>SQLInputImpl</code> object;
     *       if the value is <code>SQL NULL</code>, return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     *       position or if there are no more values in the stream 
     */
    public java.math.BigDecimal readBigDecimal() throws SQLException {
        java.math.BigDecimal attrib = (java.math.BigDecimal)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }
    }
    
    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> object
     * as an array of bytes.
     * <p>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type; this responsibility is delegated
     * to the UDT mapping as defined by a <code>SQLData</code> implementation.
     * <P>
     * @return the next attribute in this <code>SQLInputImpl</code> object;
     *       if the value is <code>SQL NULL</code>, return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     *       position or if there are no more values in the stream 
     */
    public byte[] readBytes() throws SQLException {
        byte[] attrib = (byte[])getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }
    }

    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> as 
     * a <code>java.sql.Date</code> object.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type; this responsibility is delegated
     * to the UDT mapping as defined by a <code>SQLData</code> implementation.
     * <P>
     * @return the next attribute in this <code>SQLInputImpl</code> object;
     *       if the value is <code>SQL NULL</code>, return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     *       position or if there are no more values in the stream 
     */
    public java.sql.Date readDate() throws SQLException {
        java.sql.Date attrib = (java.sql.Date)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }
    }

    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> object as
     * a <code>java.sql.Time</code> object.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type as this responsibility is delegated
     * to the UDT mapping as implemented by a <code>SQLData</code>
     * implementation.
     *
     * @return the attribute; if the value is <code>SQL NULL</code>, return
     * <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     * position; or if there are no further values in the stream. 
     */
    public java.sql.Time readTime() throws SQLException {
        java.sql.Time attrib = (java.sql.Time)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }
    }

    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> object as 
     * a <code>java.sql.Timestamp</code> object.
     *
     * @return the attribute; if the value is <code>SQL NULL</code>, return
     * <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     * position; or if there are no further values in the stream. 
     */
    public java.sql.Timestamp readTimestamp() throws SQLException {
        java.sql.Timestamp attrib = (java.sql.Timestamp)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }
    }

    /**
     * Retrieves the next attribute in this <code>SQLInputImpl</code> object
     * as a stream of Unicode characters.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type as this responsibility is delegated
     * to the UDT mapping as implemented by a <code>SQLData</code>
     * implementation.
     *
     * @return the attribute; if the value is <code>SQL NULL</code>, return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     * position; or if there are no further values in the stream.
     */
    public java.io.Reader readCharacterStream() throws SQLException {
        java.io.Reader attrib = (java.io.Reader)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }
    }

    /**
     * Returns the next attribute in this <code>SQLInputImpl</code> object
     * as a stream of ASCII characters.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type as this responsibility is delegated
     * to the UDT mapping as implemented by a <code>SQLData</code>
     * implementation.
     *
     * @return the attribute; if the value is <code>SQL NULL</code>, 
     * return <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     * position; or if there are no further values in the stream.
     */
    public java.io.InputStream readAsciiStream() throws SQLException {
        java.io.InputStream attrib = (java.io.InputStream)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }
    }
    
    /**
     * Returns the next attribute in this <code>SQLInputImpl</code> object
     * as a stream of uninterpreted bytes.
     * <P>
     * This method does not perform type-safe checking to determine if the
     * returned type is the expected type as this responsibility is delegated
     * to the UDT mapping as implemented by a <code>SQLData</code>
     * implementation.
     *
     * @return the attribute; if the value is <code>SQL NULL</code>, return 
     * <code>null</code>
     * @throws SQLException if the read position is located at an invalid
     * position; or if there are no further values in the stream.
     */
    public java.io.InputStream readBinaryStream() throws SQLException {
        java.io.InputStream attrib = (java.io.InputStream)getNextAttribute();

        if (attrib == null) {
            lastValueWasNull = true;
            return null;
        } else {
            lastValueWasNull = false;
            return attrib;
        }