Package simpleorm.dataset

Class SFieldEnum<T extends java.lang.Enum<T>>

java.lang.Object

simpleorm.dataset.SFieldMeta

simpleorm.dataset.SFieldScalar

simpleorm.dataset.SFieldEnum<T>

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

EnumField

public class SFieldEnum<T extends java.lang.Enum<T>>
extends SFieldScalar

Represents Enum field meta data. Note that internal storage is now Enum, not String, which is more consistent if less flexible eg. if database has bad data. So getObject() returns Enum.

See Also:

Serialized Form

Field Summary

Fields inherited from class simpleorm.dataset.SFieldScalar

sqlDataTypeOverride, theGenerator

Fields inherited from class simpleorm.dataset.SFieldMeta

quoteName

Constructor Summary

Constructors

Constructor	Description
SFieldEnum(SRecordMeta<?> meta, java.lang.String columnName, java.lang.Class<T> enumType, SFieldFlags... pvals)	enumType is the Enum type backing this field

Method Summary

Modifier and Type	Method	Description
protected java.lang.Object	convertToDataSetFieldType(java.lang.Object raw)	Internal representation of SFieldEnum is Enum.
java.lang.String	defaultSqlDataType()	The default data type if not overriden by overrideSqlDataType.
java.lang.Class<T>	getEnumClass()
boolean	isFKeyCompatible(SFieldScalar field)	Nota : foreign key is allowed if the enum values can be stored in the database...
int	javaSqlType()
java.lang.Object	queryFieldValue(java.sql.ResultSet rs, int sqlIndex)	Issues a JDBC get*() on the result set for the field and converts the database type to the appropriate internal type, eg, Double for a double field.
java.lang.Object	writeFieldValue(java.lang.Object value)	Converts a single value from internal representation to database representation.

Methods inherited from class simpleorm.dataset.SFieldScalar

getColumnName, getGeneratorMode, getGeneratorParameter, getMaxSize, getReferences, getTheGenerator, isForeignKey, isGenerated, isMandatory, isNotOptimisticLocked, isPrimary, overrideSqlDataType, setGeneratorMode, setMaxSize, setTheGenerator, toLongerString

Methods inherited from class simpleorm.dataset.SFieldMeta

addFlag, addValidator, doValidate, equals, getFieldName, getFlags, getRecordMeta, getUserProperties, getUserProperty, getValidators, hashCode, isDescriptive, isUnqueried, nextGeneratedValue, putUserProperty, readResolve, setQuoted, toString, writeFieldValue

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SFieldEnum

public SFieldEnum(SRecordMeta<?> meta,
                  java.lang.String columnName,
                  java.lang.Class<T> enumType,
                  SFieldFlags... pvals)

enumType is the Enum type backing this field

Method Detail

getEnumClass

public java.lang.Class<T> getEnumClass()

queryFieldValue

public java.lang.Object queryFieldValue(java.sql.ResultSet rs,
                                        int sqlIndex)
                                 throws java.lang.Exception

Description copied from class: SFieldMeta

Issues a JDBC get*() on the result set for the field and converts the database type to the appropriate internal type, eg, Double for a double field. The first column has sqlIndex==1.

Specified by:

queryFieldValue in class SFieldMeta

Throws:

java.lang.Exception

convertToDataSetFieldType

protected java.lang.Object convertToDataSetFieldType(java.lang.Object raw)

Internal representation of SFieldEnum is Enum.

Specified by:

convertToDataSetFieldType in class SFieldMeta

defaultSqlDataType

public java.lang.String defaultSqlDataType()

Description copied from class: SFieldScalar

The default data type if not overriden by overrideSqlDataType. This is only called when the data type is actually needed by CREATE TABLE, ie if no sqlDataTypeOverride is specified.

Specified by:

defaultSqlDataType in class SFieldScalar

isFKeyCompatible

public boolean isFKeyCompatible(SFieldScalar field)

Nota : foreign key is allowed if the enum values can be stored in the database... We don't force checking the values (ie use same enum type)

writeFieldValue

public java.lang.Object writeFieldValue(java.lang.Object value)

Description copied from class: SFieldMeta

Converts a single value from internal representation to database representation. Used primarily by the writeFieldValue above, but also used for converting optimistic lock values in SRecordInstance.flush.

Overidden by SFieldBoolean. (not by SFieldString).

NOTE: This does NOT need to handle NULL values (those are handled seperately by SRecordInstance)

Overrides:

writeFieldValue in class SFieldMeta

javaSqlType

public int javaSqlType()

Specified by:

javaSqlType in class SFieldScalar

Returns:

int constant from java.sql.Types, used for setting sql datatype with null values