Package org.eclipse.persistence.tools.schemaframework

Class FieldDefinition

java.lang.Object

org.eclipse.persistence.tools.schemaframework.FieldDefinition

All Implemented Interfaces:

Serializable, Cloneable

public class FieldDefinition
extends Object
implements Serializable, 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

Field Summary

Fields

Modifier and Type	Field	Description
protected String	additional
protected String	constraint
protected DatabaseField	field	DatabaseField stores the field name with case and delimiting information.
protected String	foreignKeyFieldName
protected boolean	isIdentity
protected boolean	isPrimaryKey
protected boolean	isUnique
protected String	name
protected boolean	shouldAllowNull
protected int	size
protected int	subSize
protected Class	type	Java type class for the field.
protected String	typeDefinition	Database-specific complete type definition like "VARCHAR2(50) UNIQUE NOT NULL".
protected String	typeName	Generic database type name for the field, which can be used instead of the Java class 'type'.

Constructor Summary

Constructors

Constructor	Description
FieldDefinition()
FieldDefinition(String name, Class type)
FieldDefinition(String name, Class type, int size)
FieldDefinition(String name, Class type, int size, int subSize)
FieldDefinition(String name, String typeName)

Method Summary

Modifier and Type	Method	Description
void	appendDBString(Writer writer, AbstractSession session, TableDefinition table)	INTERNAL: Append the database field definition string to the table creation statement.
void	appendTypeString(Writer writer, AbstractSession session)	INTERNAL: Append the database field definition string to the type creation statement.
Object	clone()	PUBLIC:
String	getAdditional()	PUBLIC: Return any additional information about this field to be given when the table is created.
String	getConstraint()	PUBLIC: Return any constraint of this field.
DatabaseField	getDatabaseField()	INTERNAL: Return the databasefield.
String	getForeignKeyFieldName()
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.
Class	getType()	PUBLIC: Return the type of the field.
String	getTypeDefinition()	PUBLIC: Return the type definition of the field.
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(String string)	PUBLIC: Set any additional information about this field to be given when the table is created.
void	setConstraint(String string)	PUBLIC: Set any constraint of this field.
void	setDatabaseField(DatabaseField field)	INTERNAL: Set the DatabaseField that is associated to this FieldDefinition object.
void	setForeignKeyFieldName(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(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(Class type)	PUBLIC: Set the type of the field.
void	setTypeDefinition(String typeDefinition)	PUBLIC: Set the type definition of the field.
void	setTypeName(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.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

name

protected String name

type

protected Class type

Java type class for the field. Particular database type is generated based on platform from this.

typeName

protected String typeName

Generic database type name for the field, which can be used instead of the Java class 'type'. This is translated to a particular database type based on platform.

field

protected DatabaseField field

DatabaseField stores the field name with case and delimiting information. Used if the field needs to be found in the table metadata, for extending tables. if null, name is used for comparison to determine if this field already exists.

typeDefinition

protected String typeDefinition

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.

size

protected int size

subSize

protected int subSize

shouldAllowNull

protected boolean shouldAllowNull

isIdentity

protected boolean isIdentity

isPrimaryKey

protected boolean isPrimaryKey

isUnique

protected boolean isUnique

additional

protected String additional

constraint

protected String constraint

foreignKeyFieldName

protected String foreignKeyFieldName

Constructor Detail

FieldDefinition

public FieldDefinition()

FieldDefinition

public FieldDefinition(String name,
                       Class type)

FieldDefinition

public FieldDefinition(String name,
                       Class type,
                       int size)

FieldDefinition

public FieldDefinition(String name,
                       Class type,
                       int size,
                       int subSize)

FieldDefinition

public FieldDefinition(String name,
                       String typeName)

Method Detail

appendDBString

public void appendDBString(Writer writer,
                           AbstractSession session,
                           TableDefinition table)
                    throws ValidationException

INTERNAL: Append the database field definition string to the table creation statement.

Parameters:

writer - Target writer where to write field definition string.

session - Current session context.

table - Database table being processed.

Throws:

ValidationException - When invalid or inconsistent data were found.

appendTypeString

public void appendTypeString(Writer writer,
                             AbstractSession session)
                      throws ValidationException

INTERNAL: Append the database field definition string to the type creation statement. Types do not support constraints.

Parameters:

writer - Target writer where to write field definition string.

session - Current session context.

Throws:

ValidationException - When invalid or inconsistent data were found.

clone

public Object clone()

PUBLIC:

Overrides:

clone in class Object

getAdditional

public String getAdditional()

PUBLIC: Return any additional information about this field to be given when the table is created.

getConstraint

public String getConstraint()

PUBLIC: Return any constraint of this field. i.e. "BETWEEN 0 AND 1000000".

getForeignKeyFieldName

public String getForeignKeyFieldName()

getName

public String getName()

PUBLIC: Return the name of the field.

getDatabaseField

public 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 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 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 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(String string)

PUBLIC: Set any additional information about this field to be given when the table is created.

setConstraint

public void setConstraint(String string)

PUBLIC: Set any constraint of this field. i.e. "BETWEEN 0 AND 1000000".

setForeignKeyFieldName

public void setForeignKeyFieldName(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(String name)

PUBLIC: Set the name of the field.

setDatabaseField

public void setDatabaseField(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(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(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(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 String toString()

Overrides:

toString in class Object