org.openlowcode.server.data.storage

Class TableAlias

java.lang.Object

org.openlowcode.tools.misc.Named

org.openlowcode.server.data.storage.TableAlias

All Implemented Interfaces:

NamedInterface

public class TableAlias
extends Named

A table in a query with an alias

Author:

Open Lowcode SAS

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	TableAlias.FieldSelectionAlias<E>

Constructor Summary

Constructors

Constructor and Description
TableAlias(StoredTableSchema table, java.lang.String alias) Creates a table alias that will query all fields for the table

Method Summary

Modifier and Type	Method and Description
<E> void	addFieldSelection(StoredFieldSchema<E> selectedfield, java.lang.String alias) specifies the field to display in the query for the alias.
TableAlias.FieldSelectionAlias[]	getFieldSelection() gives all field selection aliases
StoredTableSchema	getTable() gets the table in this alias
boolean	queryAllFields() tells if this table alias will query all fields
java.lang.String	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

TableAlias

public TableAlias(StoredTableSchema table,
                  java.lang.String alias)

Creates a table alias that will query all fields for the table

Parameters:

table - the table schema

alias - the alias inside the query

Method Detail

getTable

public StoredTableSchema getTable()

gets the table in this alias

Returns:

the table

addFieldSelection

public <E> void addFieldSelection(StoredFieldSchema<E> selectedfield,
                                  java.lang.String alias)

specifies the field to display in the query for the alias. Byt default, all fields are specified. However, if using this method, only fields explicitely specified will be extracted from the database.

Parameters:

selectedfield - the field to add in the query

alias - aliasfor the field

queryAllFields

public boolean queryAllFields()

tells if this table alias will query all fields

Returns:

true if all fields are queried, false if only some fields are queried

getFieldSelection

public TableAlias.FieldSelectionAlias[] getFieldSelection()

gives all field selection aliases

Returns:

the field selection aliases if the alias does not query all fields

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object