org.apache.metamodel.query

Class AbstractQueryClause<E extends QueryItem>

java.lang.Object

org.apache.metamodel.util.BaseObject

org.apache.metamodel.query.AbstractQueryClause<E>

Type Parameters:

E - the type of query item this QueryClause handles

All Implemented Interfaces:

Serializable, QueryClause<E>

Direct Known Subclasses:

FilterClause, FromClause, GroupByClause, OrderByClause, SelectClause

public abstract class AbstractQueryClause<E extends QueryItem>
extends BaseObject
implements QueryClause<E>

Represents an abstract clause in a query. Clauses contains IQueryItems and provide basic ways of adding, modifying and removing these.

See Also:

Query, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	DELIM_AND
static String	DELIM_COMMA
static String	PREFIX_FROM
static String	PREFIX_GROUP_BY
static String	PREFIX_HAVING
static String	PREFIX_ORDER_BY
static String	PREFIX_SELECT
static String	PREFIX_WHERE

Constructor Summary

Constructors

Constructor and Description
AbstractQueryClause(Query query, String prefix, String delim)

Method Summary

Modifier and Type	Method and Description
QueryClause<E>	addItem(E item)
QueryClause<E>	addItem(int index, E item)
QueryClause<E>	addItems(E... items)
QueryClause<E>	addItems(Iterable<E> items)
protected void	decorateIdentity(List<Object> identifiers) Subclasses should implement this method and add all fields to the list that are to be included in equals(...) and hashCode() evaluation
E	getItem(int index)
int	getItemCount()
List<E>	getItems()
int	indexOf(E item)
boolean	isEmpty()
QueryClause<E>	removeItem(E item)
QueryClause<E>	removeItem(int index)
QueryClause<E>	removeItems()
QueryClause<E>	setItems(E... items)
String	toSql()
String	toSql(boolean includeSchemaInColumnPaths)
String	toString()

Methods inherited from class org.apache.metamodel.util.BaseObject

classEquals, equals, hashCode

Methods inherited from class java.lang.Object

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

Field Detail

PREFIX_SELECT

public static final String PREFIX_SELECT

See Also:

Constant Field Values

PREFIX_FROM

public static final String PREFIX_FROM

See Also:

Constant Field Values

PREFIX_WHERE

public static final String PREFIX_WHERE

See Also:

Constant Field Values

PREFIX_GROUP_BY

public static final String PREFIX_GROUP_BY

See Also:

Constant Field Values

PREFIX_HAVING

public static final String PREFIX_HAVING

See Also:

Constant Field Values

PREFIX_ORDER_BY

public static final String PREFIX_ORDER_BY

See Also:

Constant Field Values

DELIM_COMMA

public static final String DELIM_COMMA

See Also:

Constant Field Values

DELIM_AND

public static final String DELIM_AND

See Also:

Constant Field Values

Constructor Detail

AbstractQueryClause

public AbstractQueryClause(Query query,
                           String prefix,
                           String delim)

Method Detail

setItems

public QueryClause<E> setItems(E... items)

Specified by:

setItems in interface QueryClause<E extends QueryItem>

addItems

public QueryClause<E> addItems(E... items)

Specified by:

addItems in interface QueryClause<E extends QueryItem>

addItems

public QueryClause<E> addItems(Iterable<E> items)

Specified by:

addItems in interface QueryClause<E extends QueryItem>

addItem

public QueryClause<E> addItem(int index,
                              E item)

Specified by:

addItem in interface QueryClause<E extends QueryItem>

addItem

public QueryClause<E> addItem(E item)

Specified by:

addItem in interface QueryClause<E extends QueryItem>

getItemCount

public int getItemCount()

Specified by:

getItemCount in interface QueryClause<E extends QueryItem>

indexOf

public int indexOf(E item)

Specified by:

indexOf in interface QueryClause<E extends QueryItem>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface QueryClause<E extends QueryItem>

getItem

public E getItem(int index)

Specified by:

getItem in interface QueryClause<E extends QueryItem>

getItems

public List<E> getItems()

Specified by:

getItems in interface QueryClause<E extends QueryItem>

removeItem

public QueryClause<E> removeItem(int index)

Specified by:

removeItem in interface QueryClause<E extends QueryItem>

removeItem

public QueryClause<E> removeItem(E item)

Specified by:

removeItem in interface QueryClause<E extends QueryItem>

removeItems

public QueryClause<E> removeItems()

Specified by:

removeItems in interface QueryClause<E extends QueryItem>

toSql

public String toSql()

Specified by:

toSql in interface QueryClause<E extends QueryItem>

toSql

public String toSql(boolean includeSchemaInColumnPaths)

Specified by:

toSql in interface QueryClause<E extends QueryItem>

toString

public String toString()

Overrides:

toString in class BaseObject

decorateIdentity

protected void decorateIdentity(List<Object> identifiers)

Description copied from class: BaseObject

Subclasses should implement this method and add all fields to the list that are to be included in equals(...) and hashCode() evaluation

Specified by:

decorateIdentity in class BaseObject