wt.introspection
Class AliasDescriptor

java.lang.Object
  wt.introspection.ColumnDescriptor
      wt.introspection.AliasDescriptor

All Implemented Interfaces:

Cloneable, Externalizable, Serializable

public class AliasDescriptor

extends ColumnDescriptor

AliasDescriptor supplies meta-data information for a database view, over a particular table column.

Supported API: false

Extendable: false

See Also:

ColumnDescriptor, DatabaseViewInfo, WTIntrospector, Serialized Form

Field Summary

private String	aliasName
private static int	DEBUG_LEVEL
private String	tableAlias
private ColumnDescriptor	wrappedColumn

Fields inherited from class wt.introspection.ColumnDescriptor

DEBUG, externalizationVersionUID, MAX_BYTES_PER_CHAR, MAX_SQL_STRING_SIZE, name, REF_DELIMETER, serialVersionUID

Constructor Summary

protected	AliasDescriptor()
	AliasDescriptor(ColumnDescriptor col_descr, String table_alias)
	AliasDescriptor(ColumnDescriptor col_descr, String the_name, String the_alias_name, String the_table_alias)

Method Summary

String	getBaseColumnName() Answer my source table's column name
String	getColumnName() Answer my database column name, or alias of the column name, if different
String	getJavaType() Answer my Java type
int	getLength() Length of the attribute
PropertyDescriptor	getPropertyDescriptor() Answer my PropertyDescriptor.
int	getSQLType() Answer my SQL type
String	getTableAlias() Answer the alias name of the base table, which is the source of the base column
String	getTableSize() Get the table size.
String	getTableSpaceName() Get the table space name.
(package private) ColumnDescriptor	getWrappedColumnDescriptor()
boolean	isIndexed() Answer whether attribute is indexed
boolean	isRequired() Answer true | false - attribute is required
boolean	isUnique() Answer whether attribute must be unique, among all instances
boolean	isUpdatable() Answer whether column may be updatable
(package private) void	setPropertyDescriptor(PropertyDescriptor pd) Set my PropertyDescriptor Only to be used when ClassInfo initializes it.

Methods inherited from class wt.introspection.ColumnDescriptor

clone, getName, readExternal, setColumnName, setName, setOwnerClassInfo, toString, writeExternal

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG_LEVEL

private static final int DEBUG_LEVEL

See Also:

Constant Field Values

aliasName

private String aliasName

tableAlias

private String tableAlias

wrappedColumn

private ColumnDescriptor wrappedColumn

Constructor Detail

AliasDescriptor

protected AliasDescriptor()

AliasDescriptor

public AliasDescriptor(ColumnDescriptor col_descr,
                       String table_alias)

AliasDescriptor

public AliasDescriptor(ColumnDescriptor col_descr,
                       String the_name,
                       String the_alias_name,
                       String the_table_alias)

Method Detail

getBaseColumnName

public String getBaseColumnName()

Answer my source table's column name

Overrides:

getBaseColumnName in class ColumnDescriptor

Returns:

source table's column name

getColumnName

public String getColumnName()

Answer my database column name, or alias of the column name, if different

Overrides:

getColumnName in class ColumnDescriptor

Returns:

columnName

getJavaType

public String getJavaType()

Answer my Java type

Overrides:

getJavaType in class ColumnDescriptor

Returns:

Java type

getLength

public int getLength()

Length of the attribute

Overrides:

getLength in class ColumnDescriptor

Returns:

length

getSQLType

public int getSQLType()

Answer my SQL type

Overrides:

getSQLType in class ColumnDescriptor

Returns:

SQL type

getTableAlias

public String getTableAlias()

Answer the alias name of the base table, which is the source of the base column

Returns:

tableAlias

getTableSize

public String getTableSize()

Get the table size. Only applies to certain column types, such as BLOB.

Overrides:

getTableSize in class ColumnDescriptor

Returns:

Table Size is a categorization, with valid String values of [ TINY | SMALL | MEDIUM | LARGE | HUGE ]

getTableSpaceName

public String getTableSpaceName()

Get the table space name. Only applies to certain column types, such as BLOB.

Overrides:

getTableSpaceName in class ColumnDescriptor

Returns:

Table Space Name

getWrappedColumnDescriptor

ColumnDescriptor getWrappedColumnDescriptor()

isIndexed

public boolean isIndexed()

Answer whether attribute is indexed

Overrides:

isIndexed in class ColumnDescriptor

Returns:

indexed

isRequired

public boolean isRequired()

Answer true | false - attribute is required

Overrides:

isRequired in class ColumnDescriptor

Returns:

required

isUnique

public boolean isUnique()

Answer whether attribute must be unique, among all instances

Overrides:

isUnique in class ColumnDescriptor

Returns:

unique

isUpdatable

public boolean isUpdatable()

Answer whether column may be updatable

Overrides:

isUpdatable in class ColumnDescriptor

Returns:

updatable

getPropertyDescriptor

public PropertyDescriptor getPropertyDescriptor()

Answer my PropertyDescriptor.

Overrides:

getPropertyDescriptor in class ColumnDescriptor

Returns:

PropertyDescriptor

setPropertyDescriptor

void setPropertyDescriptor(PropertyDescriptor pd)

Set my PropertyDescriptor Only to be used when ClassInfo initializes it.

Overrides:

setPropertyDescriptor in class ColumnDescriptor