org.apache.derby.iapi.types
Class J2SEDataValueFactory

java.lang.Object
  extended by org.apache.derby.iapi.types.DataValueFactoryImpl
      extended by org.apache.derby.iapi.types.J2SEDataValueFactory
All Implemented Interfaces:
ModuleControl, DataValueFactory

public class J2SEDataValueFactory
extends DataValueFactoryImpl

DataValueFactory implementation for J2SE. Uses SQLDecimal for DECIMAL which implements DECIMAL functionality using java.math.BigDecimal.

See Also:
DataValueFactory

Field Summary
 
Fields inherited from class org.apache.derby.iapi.types.DataValueFactoryImpl
localeFinder
 
Constructor Summary
J2SEDataValueFactory()
           
 
Method Summary
 void boot(boolean create, java.util.Properties properties)
          Boot this module with the given properties.
 NumberDataValue getDecimalDataValue(java.lang.Long value, NumberDataValue previous)
          Get a SQL DECIMAL with the given value.
 NumberDataValue getDecimalDataValue(java.lang.String value)
          Get a SQL DECIMAL with the given value.
 NumberDataValue getNullDecimal(NumberDataValue dataValue)
          Get a SQL Decimal/Numeric with a SQL null value.
 
Methods inherited from class org.apache.derby.iapi.types.DataValueFactoryImpl
getBitDataValue, getBitDataValue, getBlobDataValue, getBlobDataValue, getCharacterCollator, getCharDataValue, getCharDataValue, getCharDataValue, getClobDataValue, getClobDataValue, getClobDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDataValue, getDate, getDateValue, getDecimalDataValue, getDecimalDataValue, getDecimalDataValue, getLongVarbitDataValue, getLongvarcharDataValue, getLongvarcharDataValue, getLongvarcharDataValue, getNull, getNullBit, getNullBlob, getNullBoolean, getNullByte, getNullChar, getNullChar, getNullClob, getNullClob, getNullDate, getNullDouble, getNullDVDWithUCS_BASICcollation, getNullFloat, getNullInteger, getNullLong, getNullLongVarbit, getNullLongvarchar, getNullLongvarchar, getNullObject, getNullRef, getNullShort, getNullTime, getNullTimestamp, getNullVarbit, getNullVarchar, getNullVarchar, getNullXML, getTimestamp, getTimestamp, getTimestampValue, getTimeValue, getVarbitDataValue, getVarcharDataValue, getVarcharDataValue, getVarcharDataValue, getXMLDataValue, stop
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

J2SEDataValueFactory

public J2SEDataValueFactory()
Method Detail

boot

public void boot(boolean create,
                 java.util.Properties properties)
          throws StandardException
Description copied from interface: ModuleControl
Boot this module with the given properties. Creates a module instance that can be found using the findModule() methods of Monitor. The module can only be found using one of these findModule() methods once this method has returned.

An implementation's boot method can throw StandardException. If it is thrown the module is not registered by the monitor and therefore cannot be found through a findModule(). In this case the module's stop() method is not called, thus throwing this exception must free up any resources.

When create is true the contents of the properties object will be written to the service.properties of the persistent service. Thus any code that requires an entry in service.properties must explicitly place the value in this properties set using the put method.
Typically the properties object contains one or more default properties sets, which are not written out to service.properties. These default sets are how callers modify the create process. In a JDBC connection database create the first set of defaults is a properties object that contains the attributes that were set on the jdbc:derby: URL. This attributes properties set has the second default properties set as its default. This set (which could be null) contains the properties that the user set on their DriverManager.getConnection() call, and are thus not owned by Derby code, and thus must not be modified by Derby code.

When create is false the properties object contains all the properties set in the service.properties file plus a limited number of attributes from the JDBC URL attributes or connection properties set. This avoids properties set by the user compromising the boot process. An example of a property passed in from the JDBC world is the bootPassword for encrypted databases.

Code should not hold onto the passed in properties reference after boot time as its contents may change underneath it. At least after the complete boot is completed, the links to all the default sets will be removed.

Specified by:
boot in interface ModuleControl
Overrides:
boot in class DataValueFactoryImpl
Throws:
StandardException - Module cannot be started.
See Also:
Monitor, ModuleFactory

getDecimalDataValue

public NumberDataValue getDecimalDataValue(java.lang.Long value,
                                           NumberDataValue previous)
                                    throws StandardException
Description copied from interface: DataValueFactory
Get a SQL DECIMAL with the given value.

Throws:
StandardException - Thrown on error

getDecimalDataValue

public NumberDataValue getDecimalDataValue(java.lang.String value)
                                    throws StandardException
Description copied from interface: DataValueFactory
Get a SQL DECIMAL with the given value. The second form re-uses the previous value, if non-null, as the data holder to return.

Throws:
StandardException - Thrown on error

getNullDecimal

public NumberDataValue getNullDecimal(NumberDataValue dataValue)
Description copied from interface: DataValueFactory
Get a SQL Decimal/Numeric with a SQL null value. If the supplied value is null then get a new value, otherwise set it to null and return that value.


Built on Thu 2012-03-29 21:53:33+0000, from revision ???

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