FieldDefinition (Oracle Fusion Middleware Java API Reference for Oracle TopLink)

java.lang.Object
- org.eclipse.persistence.tools.schemaframework.FieldDefinition

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable
```
public class FieldDefinition
extends java.lang.Object
implements java.io.Serializable, java.lang.Cloneable
```
Purpose: Define a database field definition for creation within a table. This differs from DatabaseField in that it is used only table creation not a runtime.

Responsibilities:
- Store the name, java type, size and sub-size. The sizes are optional and the name of the java class is used for the type.
See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description
`FieldDefinition()`
`FieldDefinition(java.lang.String name, java.lang.Class type)`
`FieldDefinition(java.lang.String name, java.lang.Class type, int size)`
`FieldDefinition(java.lang.String name, java.lang.Class type, int size, int subSize)`
`FieldDefinition(java.lang.String name, java.lang.String typeName)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`appendDBString(java.io.Writer writer, org.eclipse.persistence.internal.sessions.AbstractSession session, TableDefinition table)` INTERNAL: Append the database field definition string to the table creation statement.
`void`	`appendTypeString(java.io.Writer writer, org.eclipse.persistence.internal.sessions.AbstractSession session)` INTERNAL: Append the database field definition string to the type creation statement.
`java.lang.Object`	`clone()` PUBLIC:
`java.lang.String`	`getAdditional()` PUBLIC: Return any additional information about this field to be given when the table is created.
`java.lang.String`	`getConstraint()` PUBLIC: Return any constraint of this field.
`org.eclipse.persistence.internal.helper.DatabaseField`	`getDatabaseField()` INTERNAL: Return the databasefield.
`java.lang.String`	`getForeignKeyFieldName()`
`java.lang.String`	`getName()` PUBLIC: Return the name of the field.
`int`	`getSize()` PUBLIC: Return the size of the field, this is only required for some field types.
`int`	`getSubSize()` PUBLIC: Return the sub-size of the field.
`java.lang.Class`	`getType()` PUBLIC: Return the type of the field.
`java.lang.String`	`getTypeDefinition()` PUBLIC: Return the type definition of the field.
`java.lang.String`	`getTypeName()` PUBLIC: Return the type name of the field.
`boolean`	`isIdentity()` PUBLIC: Answer whether the receiver is an identity field.
`boolean`	`isPrimaryKey()` PUBLIC: Answer whether the receiver is a primary key.
`boolean`	`isUnique()` PUBLIC: Answer whether the receiver is a unique constraint field.
`void`	`setAdditional(java.lang.String string)` PUBLIC: Set any additional information about this field to be given when the table is created.
`void`	`setConstraint(java.lang.String string)` PUBLIC: Set any constraint of this field.
`void`	`setDatabaseField(org.eclipse.persistence.internal.helper.DatabaseField field)` INTERNAL: Set the DatabaseField that is associated to this FieldDefinition object.
`void`	`setForeignKeyFieldName(java.lang.String foreignKeyFieldName)`
`void`	`setIsIdentity(boolean value)` PUBLIC: Set whether the receiver is an identity field.
`void`	`setIsPrimaryKey(boolean value)` PUBLIC: Set whether the receiver is a primary key.
`void`	`setName(java.lang.String name)` PUBLIC: Set the name of the field.
`void`	`setShouldAllowNull(boolean value)` PUBLIC: Set whether the receiver should allow null values.
`void`	`setSize(int size)` PUBLIC: Set the size of the field, this is only required for some field types.
`void`	`setSubSize(int subSize)` PUBLIC: Set the sub-size of the field.
`void`	`setType(java.lang.Class type)` PUBLIC: Set the type of the field.
`void`	`setTypeDefinition(java.lang.String typeDefinition)` PUBLIC: Set the type definition of the field.
`void`	`setTypeName(java.lang.String typeName)` PUBLIC: Set the type name of the field.
`void`	`setUnique(boolean value)` PUBLIC: Set whether the receiver is a unique constraint field.
`boolean`	`shouldAllowNull()` PUBLIC: Return whether the receiver should allow null values.
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - FieldDefinition
```
public FieldDefinition()
```
  - FieldDefinition
```
public FieldDefinition(java.lang.String name,
               java.lang.Class type)
```
  - FieldDefinition
```
public FieldDefinition(java.lang.String name,
               java.lang.Class type,
               int size)
```
  - FieldDefinition
```
public FieldDefinition(java.lang.String name,
               java.lang.Class type,
               int size,
               int subSize)
```
  - FieldDefinition
```
public FieldDefinition(java.lang.String name,
               java.lang.String typeName)
```
- Method Detail
  - appendDBString
```
public void appendDBString(java.io.Writer writer,
                  org.eclipse.persistence.internal.sessions.AbstractSession session,
                  TableDefinition table)
                    throws ValidationException
```
    INTERNAL: Append the database field definition string to the table creation statement.
    
    Throws:
    
    ValidationException
  - appendTypeString
```
public void appendTypeString(java.io.Writer writer,
                    org.eclipse.persistence.internal.sessions.AbstractSession session)
                      throws ValidationException
```
    INTERNAL: Append the database field definition string to the type creation statement. Types do not support constraints.
    
    Throws:
    
    ValidationException
  - clone
```
public java.lang.Object clone()
```
    PUBLIC:
    
    Overrides:
    
    clone in class java.lang.Object
  - getAdditional
```
public java.lang.String getAdditional()
```
    PUBLIC: Return any additional information about this field to be given when the table is created.
  - getConstraint
```
public java.lang.String getConstraint()
```
    PUBLIC: Return any constraint of this field. i.e. "BETWEEN 0 AND 1000000".
  - getForeignKeyFieldName
```
public java.lang.String getForeignKeyFieldName()
```
  - getName
```
public java.lang.String getName()
```
    PUBLIC: Return the name of the field.
  - getDatabaseField
```
public org.eclipse.persistence.internal.helper.DatabaseField getDatabaseField()
```
    INTERNAL: Return the databasefield.
  - getSize
```
public int getSize()
```
    PUBLIC: Return the size of the field, this is only required for some field types.
  - getSubSize
```
public int getSubSize()
```
    PUBLIC: Return the sub-size of the field. This is used as the decimal precision for numeric values only.
  - getType
```
public java.lang.Class getType()
```
    PUBLIC: Return the type of the field. This should be set to a java class, such as String.class, Integer.class or Date.class.
  - getTypeName
```
public java.lang.String getTypeName()
```
    PUBLIC: Return the type name of the field. This is the generic database type name, which can be used instead of the Java class 'type'. This is translated to a particular database type based on platform.
  - getTypeDefinition
```
public java.lang.String getTypeDefinition()
```
    PUBLIC: Return the type definition of the field. This is database-specific complete type definition like "VARCHAR2(50) UNIQUE NOT NULL". If this is given, other additional type constraint fields(size, unique, null) are meaningless.
  - isIdentity
```
public boolean isIdentity()
```
    PUBLIC: Answer whether the receiver is an identity field. Identity fields are Sybase specific, they insure that on insert a unique sequential value is stored in the row.
  - isPrimaryKey
```
public boolean isPrimaryKey()
```
    PUBLIC: Answer whether the receiver is a primary key. If the table has a multipart primary key this should be set in each field.
  - isUnique
```
public boolean isUnique()
```
    PUBLIC: Answer whether the receiver is a unique constraint field.
  - setAdditional
```
public void setAdditional(java.lang.String string)
```
    PUBLIC: Set any additional information about this field to be given when the table is created.
  - setConstraint
```
public void setConstraint(java.lang.String string)
```
    PUBLIC: Set any constraint of this field. i.e. "BETWEEN 0 AND 1000000".
  - setForeignKeyFieldName
```
public void setForeignKeyFieldName(java.lang.String foreignKeyFieldName)
```
  - setIsIdentity
```
public void setIsIdentity(boolean value)
```
    PUBLIC: Set whether the receiver is an identity field. Identity fields are Sybase specific, they insure that on insert a unique sequential value is stored in the row.
  - setIsPrimaryKey
```
public void setIsPrimaryKey(boolean value)
```
    PUBLIC: Set whether the receiver is a primary key. If the table has a multipart primary key this should be set in each field.
  - setName
```
public void setName(java.lang.String name)
```
    PUBLIC: Set the name of the field.
  - setDatabaseField
```
public void setDatabaseField(org.eclipse.persistence.internal.helper.DatabaseField field)
```
    INTERNAL: Set the DatabaseField that is associated to this FieldDefinition object. The databaesField is used when extending tables to see if this field already exists.
  - setShouldAllowNull
```
public void setShouldAllowNull(boolean value)
```
    PUBLIC: Set whether the receiver should allow null values.
  - setSize
```
public void setSize(int size)
```
    PUBLIC: Set the size of the field, this is only required for some field types.
  - setSubSize
```
public void setSubSize(int subSize)
```
    PUBLIC: Set the sub-size of the field. This is used as the decimal precision for numeric values only.
  - setType
```
public void setType(java.lang.Class type)
```
    PUBLIC: Set the type of the field. This should be set to a java class, such as String.class, Integer.class or Date.class.
  - setTypeName
```
public void setTypeName(java.lang.String typeName)
```
    PUBLIC: Set the type name of the field. This is the generic database type name, which can be used instead of the Java class 'type'. This is translated to a particular database type based on platform.
  - setTypeDefinition
```
public void setTypeDefinition(java.lang.String typeDefinition)
```
    PUBLIC: Set the type definition of the field. This is database-specific complete type definition like "VARCHAR2(50) UNIQUE NOT NULL". If this is given, other additional type constraint fields(size, unique, null) are meaningless.
  - setUnique
```
public void setUnique(boolean value)
```
    PUBLIC: Set whether the receiver is a unique constraint field.
  - shouldAllowNull
```
public boolean shouldAllowNull()
```
    PUBLIC: Return whether the receiver should allow null values.
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class FieldDefinition

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FieldDefinition

FieldDefinition

FieldDefinition

FieldDefinition

FieldDefinition

Method Detail

appendDBString

appendTypeString

clone

getAdditional

getConstraint

getForeignKeyFieldName

getName

getDatabaseField

getSize

getSubSize

getType

getTypeName

getTypeDefinition

isIdentity

isPrimaryKey

isUnique

setAdditional

setConstraint

setForeignKeyFieldName

setIsIdentity

setIsPrimaryKey

setName

setDatabaseField

setShouldAllowNull

setSize

setSubSize

setType

setTypeName

setTypeDefinition

setUnique

shouldAllowNull

toString