org.openlowcode.server.data.storage

Class StoredFieldSchema<E>

java.lang.Object

org.openlowcode.tools.misc.Named

org.openlowcode.server.data.storage.FieldSchema<E>

org.openlowcode.server.data.storage.StoredFieldSchema<E>

All Implemented Interfaces:

NamedInterface

Direct Known Subclasses:

DecimalStoredField, IntegerStoredField, LargeBinaryStoredField, StringStoredField, TimestampStoredField

public abstract class StoredFieldSchema<E>
extends FieldSchema<E>

definition of a field in a table

Author:

Open Lowcode SAS

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	StoredFieldSchema.Visitor A visitor for stored field schema

Constructor Summary

Constructors

Constructor and Description
StoredFieldSchema(java.lang.String name, StoredTableSchema parent)

Method Summary

Modifier and Type	Method and Description
abstract void	accept(StoredFieldSchema.Visitor visitor) gateway for a visitor
abstract QueryCondition	buildQueryCondition(QueryOperator<E> operator, E value) build a simple query condition with this field
abstract E	castToType(java.lang.Object o)
abstract E	defaultValue()
abstract E	defaultValueAtColumnCreation() returns default value of the field
protected StoredTableSchema	getParent() the table schema definition for this field

Methods inherited from class org.openlowcode.server.data.storage.FieldSchema

initBlankField, toString

Methods inherited from class org.openlowcode.tools.misc.Named

changeName, cleanName, equals, getName

Methods inherited from class java.lang.Object

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

Constructor Detail

StoredFieldSchema

public StoredFieldSchema(java.lang.String name,
                         StoredTableSchema parent)

Parameters:

name -

parent -

Method Detail

getParent

protected StoredTableSchema getParent()

the table schema definition for this field

Returns:

this field

buildQueryCondition

public abstract QueryCondition buildQueryCondition(QueryOperator<E> operator,
                                                   E value)

build a simple query condition with this field

Parameters:

operator - condition operator '='

value - value of the query condition

Returns:

accept

public abstract void accept(StoredFieldSchema.Visitor visitor)

gateway for a visitor

Parameters:

visitor - visitor

defaultValueAtColumnCreation

public abstract E defaultValueAtColumnCreation()

returns default value of the field

Returns:

the default value

defaultValue

public abstract E defaultValue()

Specified by:

defaultValue in class FieldSchema<E>

Returns:

the default value

castToType

public abstract E castToType(java.lang.Object o)

Specified by:

castToType in class FieldSchema<E>

Parameters:

o - an uncasted object

Returns:

the object casted to the actual class, if class not good, throws a RuntimeException