org.mentabean.jdbc

Class QueryBuilder

java.lang.Object

org.mentabean.jdbc.QueryBuilder

public class QueryBuilder
extends Object

Fluent QueryBuilder useful to create SQL queries

Author:

margel, erico

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	QueryBuilder.Alias<T>
static interface	QueryBuilder.Appendable<T>
static interface	QueryBuilder.CanGroupBy
static interface	QueryBuilder.CanLimit
static interface	QueryBuilder.CanOrder
class	QueryBuilder.EndClause
class	QueryBuilder.EndClauseHaving
class	QueryBuilder.EndClauseWhere
class	QueryBuilder.Equals
class	QueryBuilder.From
class	QueryBuilder.GroupBy
static interface	QueryBuilder.HasEndClause<T extends QueryBuilder.EndClause>
static interface	QueryBuilder.HasInitClause<T extends QueryBuilder.InitClause>
class	QueryBuilder.Having
class	QueryBuilder.InitClause
class	QueryBuilder.InitClauseHaving
class	QueryBuilder.InitClauseWhere
class	QueryBuilder.Limit
class	QueryBuilder.Offset
class	QueryBuilder.On Class representing a 'pos-join' operation
class	QueryBuilder.OnEquals
class	QueryBuilder.Order
class	QueryBuilder.Ordering
class	QueryBuilder.PopulateUsing
class	QueryBuilder.Query Represents a query ready to execute
class	QueryBuilder.Select
class	QueryBuilder.UsingPK
class	QueryBuilder.Where

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	QueryBuilder(AnsiSQLBeanSession session)
protected	QueryBuilder(AnsiSQLBeanSession session, ParamHandler paramHandler)

Method Summary

Methods

Modifier and Type	Method and Description
<T> QueryBuilder.Alias<T>	aliasTo(Class<? extends T> clazz) Creates an alias to be used in this QueryBuilder.
<T> QueryBuilder.Alias<T>	aliasTo(Class<? extends T> clazz, String alias) Creates an alias to be used in this QueryBuilder
void	finish()
List<QueryBuilder.Alias<?>>	getCreatedAliases()
QueryBuilder.Select	select(QueryBuilder.Alias<?>... as) Builds an initial SELECT statement with given aliases
QueryBuilder.Select	select(Sentence... sentences) Builds an initial SELECT statement with given sentences
QueryBuilder.Select	selectDistinct(QueryBuilder.Alias<?>... as)
QueryBuilder.Select	selectDistinct(Sentence... sentences)
QueryBuilder.From	selectDistinctFrom(QueryBuilder.Alias<?> as)
QueryBuilder.From	selectFrom(QueryBuilder.Alias<?> as) Builds an initial SELECT alias FROM alias statement. Same as select(alias).from(alias)
QueryBuilder	subQuery() Creates a new QueryBuilder with the same session.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryBuilder

protected QueryBuilder(AnsiSQLBeanSession session)

QueryBuilder

protected QueryBuilder(AnsiSQLBeanSession session,
            ParamHandler paramHandler)

Method Detail

getCreatedAliases

public List<QueryBuilder.Alias<?>> getCreatedAliases()

select

public QueryBuilder.Select select(QueryBuilder.Alias<?>... as)

Builds an initial SELECT statement with given aliases

Parameters:

as - - Alias(es) with properties that will be retrieved

Returns:

A new Select object

selectDistinct

public QueryBuilder.Select selectDistinct(QueryBuilder.Alias<?>... as)

selectFrom

public QueryBuilder.From selectFrom(QueryBuilder.Alias<?> as)

Builds an initial SELECT alias FROM alias statement.
Same as select(alias).from(alias)

Parameters:

as - - Alias with properties that will be retrieved

Returns:

A new From object

See Also:

select(Alias...), Select#from(Alias)

selectDistinctFrom

public QueryBuilder.From selectDistinctFrom(QueryBuilder.Alias<?> as)

select

public QueryBuilder.Select select(Sentence... sentences)

Builds an initial SELECT statement with given sentences

Parameters:

sentences - - Sentence(s) to insert in SELECT clause

Returns:

A new Select object

selectDistinct

public QueryBuilder.Select selectDistinct(Sentence... sentences)

subQuery

public QueryBuilder subQuery()

Creates a new QueryBuilder with the same session. It's useful to build sub-queries from the main query

Returns:

The new QueryBuilder instance

aliasTo

public <T> QueryBuilder.Alias<T> aliasTo(Class<? extends T> clazz,
                                String alias)

Creates an alias to be used in this QueryBuilder

Parameters:

clazz - - Bean class that will be mapped to a BeanConfig

alias - - String indicating the alia's name

Returns:

- The alias object

aliasTo

public <T> QueryBuilder.Alias<T> aliasTo(Class<? extends T> clazz)

Creates an alias to be used in this QueryBuilder. The alia's name is the simple name of the bean class

Parameters:

clazz - - Bean class that will be mapped to a BeanConfig

Returns:

- The alias object

finish

public void finish()