me.saharnooby.lib.query.query.impl

Class Select

java.lang.Object

me.saharnooby.lib.query.query.AbstractQuery

me.saharnooby.lib.query.query.ConditionalQuery<Select>

me.saharnooby.lib.query.query.impl.Select

public final class Select
extends ConditionalQuery<Select>

A SELECT query.

Since:

21:14 14.11.2019

Author:

saharNooby

Field Summary

Fields inherited from class me.saharnooby.lib.query.query.ConditionalQuery

conditions

Constructor Summary

Constructors

Constructor and Description
Select()

Method Summary

Modifier and Type	Method and Description
Select	all() Adds * to the selected expression list.
Select	col(@NonNull String name) Adds a column to the selected expression list.
Select	desc() Adds DESC clause to the ORDER BY clause.
Select	expr(@NonNull String expr, Object... params) Adds an SQL expression to the selected expression list.
Select	forUpdate() Adds FOR UPDATE clause to the end of the query.
Select	from(@NonNull String tableName) Sets the name of the table to select from.
Select	from(@NonNull String database, @NonNull String tableName) Sets names of the database and the table to select from.
List<Object>	getParams()
String	getSQL()
Select	limit(long limit) Adds LIMIT limit clause to the query.
Select	offset(long offset) Adds OFFSET offset clause to the query.
Select	orderBy(@NonNull String column) Adds ORDER BY column clause to the query.
Select	orderByExpr(@NonNull String expr, Object... params) Adds ORDER BY expression clause to the query.

Methods inherited from class me.saharnooby.lib.query.query.ConditionalQuery

appendConditions, where, whereExpr, whereNull, whereNullable

Methods inherited from class me.saharnooby.lib.query.query.AbstractQuery

prepareStatement, prepareStatement, query, queryAndMap, queryAndMapAll, update, update, updateWithKeys, updateWithKeysAndMap, updateWithKeysAndMapAll

Methods inherited from class java.lang.Object

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

Constructor Detail

Select

public Select()

Method Detail

all

public Select all()

Adds * to the selected expression list. No other columns can be added.

Returns:

This object.

col

public Select col(@NonNull
                  @NonNull String name)

Adds a column to the selected expression list.

Parameters:

name - Column name.

Returns:

This object.

expr

public Select expr(@NonNull
                   @NonNull String expr,
                   @NonNull
                   Object... params)

Adds an SQL expression to the selected expression list.

Parameters:

expr - SQL expression.

params - Expression parameters (for filling in ? placeholders).

Returns:

This object.

from

public Select from(@NonNull
                   @NonNull String tableName)

Sets the name of the table to select from.

Parameters:

tableName - Name of the table.

Returns:

This object.

from

public Select from(@NonNull
                   @NonNull String database,
                   @NonNull
                   @NonNull String tableName)

Sets names of the database and the table to select from.

Parameters:

database - Name of the database.

tableName - Name of the table.

Returns:

This object.

orderBy

public Select orderBy(@NonNull
                      @NonNull String column)

Adds ORDER BY column clause to the query.

Parameters:

column - Column name.

Returns:

This object.

orderByExpr

public Select orderByExpr(@NonNull
                          @NonNull String expr,
                          @NonNull
                          Object... params)

Adds ORDER BY expression clause to the query.

Parameters:

expr - SQL expression.

params - Expression parameters (for filling in ? placeholders).

Returns:

This object.

desc

public Select desc()

Adds DESC clause to the ORDER BY clause.

Returns:

This object.

limit

public Select limit(long limit)

Adds LIMIT limit clause to the query.

Parameters:

limit - Limit, must be positive.

Returns:

This object.

offset

public Select offset(long offset)

Adds OFFSET offset clause to the query.

Parameters:

offset - Offset, must be non-negative.

Returns:

This object.

forUpdate

public Select forUpdate()

Adds FOR UPDATE clause to the end of the query.

Returns:

This object.

getSQL

public String getSQL()

Specified by:

getSQL in class AbstractQuery

Returns:

The SQL query.

getParams

public List<Object> getParams()

Specified by:

getParams in class AbstractQuery

Returns:

Values of the query parameters, in order of occurence (denoted by ? in the SQL query).