org.afcs.warts.handlers
Class IntegerHandler

java.lang.Object
  org.afcs.warts.handlers.DataHandlerSupport
      org.afcs.warts.handlers.IntegerHandler

All Implemented Interfaces:

DataHandler

public final class IntegerHandler

extends DataHandlerSupport

implements DataHandler

The IntegerHandler class handles integer data, which is stored in columns of type NUMBER, but is reported by Oracle to have a type of java.sql.Types.DECIMAL. The object returned by loadValue(java.sql.ResultSet, int) is a java.lang.Long.

LICENSE: This code is released to the public domain and may be used for any purpose whatsoever without permission or acknowledgment.

Version:

Last Modified 20 August 2003

Author:

Warren Hedley ( whedley at sdsc dot edu )

Constructor Summary

IntegerHandler(TableDescription tableDescription, ColumnDescription columnDescription)
Constructs a new instance on behalf of subclasses that will handle data values for the specified column in the specified table.

Method Summary

void	bindNonNullValue(java.sql.PreparedStatement statement, int variableIndex, java.lang.Object value) This method binds the specified non-null value (which should be a java.lang.Long instance) to the specified index in the specified statement.
java.lang.Object	loadValue(java.sql.ResultSet resultSet, int columnIndex) Returns a java.lang.Long instance with the integer value of the specified column from the specified result set, if non-null.
java.lang.String	printNonNullValue(java.lang.Object value) Returns the result of value.toString(), which means avoiding having to cast the object to a java.lang.Long.

Methods inherited from class org.afcs.warts.handlers.DataHandlerSupport

getColumnDescription, getNullType, getTableDescription, isCharacterData, isNullHandler, loadBytesFromStream, logWrongValueTypeWarning, postProcessBind, requiresBindPostProcessing, requiresStreamedLoading, toString, verifyObjectIsString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.afcs.warts.handlers.DataHandler

getNullType, isCharacterData, isNullHandler, postProcessBind, requiresBindPostProcessing, requiresStreamedLoading

Constructor Detail

IntegerHandler

public IntegerHandler(TableDescription tableDescription,
                      ColumnDescription columnDescription)

Constructs a new instance on behalf of subclasses that will handle data values for the specified column in the specified table.

Parameters:

tableDescription - The table that the handler will be handling data for.

columnDescription - The column that this class will be processing data for.

Method Detail

bindNonNullValue

public void bindNonNullValue(java.sql.PreparedStatement statement,
                             int variableIndex,
                             java.lang.Object value)
                      throws java.sql.SQLException

This method binds the specified non-null value (which should be a java.lang.Long instance) to the specified index in the specified statement. A warning message is logged if the value is not a Long.

Specified by:

bindNonNullValue in interface DataHandler

Parameters:

statement - The statement to bind the value in.

variableIndex - The index of the variable to bind.

value - The value to bind to the statement.

Throws:

java.sql.SQLException - If a SQL error occurs during binding.

loadValue

public java.lang.Object loadValue(java.sql.ResultSet resultSet,
                                  int columnIndex)
                           throws java.sql.SQLException

Returns a java.lang.Long instance with the integer value of the specified column from the specified result set, if non-null.

Specified by:

loadValue in interface DataHandler

Parameters:

resultSet - The result set to load data from.

columnIndex - The index of the column to load data from.

Returns:

A Long instance or null.

Throws:

java.sql.SQLException - If a SQL exception occurs while loading data.

printNonNullValue

public java.lang.String printNonNullValue(java.lang.Object value)

Returns the result of value.toString(), which means avoiding having to cast the object to a java.lang.Long.

Specified by:

printNonNullValue in interface DataHandler

Parameters:

value - The object value to print.

Returns:

A string containing a representation of the specified value appropriate for use in a SQL script.