com.datastax.driver.core.querybuilder

Class Select.Selection

java.lang.Object

com.datastax.driver.core.querybuilder.Select.Builder

com.datastax.driver.core.querybuilder.Select.Selection

Enclosing class:

Select

public static class Select.Selection
extends Select.Builder

An Selection clause for an in-construction SELECT statement.

Field Summary

Fields inherited from class com.datastax.driver.core.querybuilder.Select.Builder

columnNames

Constructor Summary

Constructors

Constructor and Description
Select.Selection()

Method Summary

Methods

Modifier and Type	Method and Description
Select.Builder	all() Selects all columns (i.e.
Select.Selection	column(String name) Selects the provided column.
Select.Builder	countAll() Selects the count of all returned rows (i.e.
Select.Selection	fcall(String name, Object... parameters) Creates a function call.
Select.Selection	ttl(String name) Selects the ttl of provided column.
Select.Selection	writeTime(String name) Selects the write time of provided column.

Methods inherited from class com.datastax.driver.core.querybuilder.Select.Builder

from, from, from

Methods inherited from class java.lang.Object

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

Constructor Detail

Select.Selection

public Select.Selection()

Method Detail

all

public Select.Builder all()

Selects all columns (i.e. "SELECT * ...")

Returns:

an in-build SELECT statement.

Throws:

IllegalStateException - if some columns had already been selected for this builder.

countAll

public Select.Builder countAll()

Selects the count of all returned rows (i.e. "SELECT count(*) ...").

Returns:

an in-build SELECT statement.

Throws:

IllegalStateException - if some columns had already been selected for this builder.

column

public Select.Selection column(String name)

Selects the provided column.

Parameters:

name - the new column name to add.

Returns:

this in-build SELECT statement

writeTime

public Select.Selection writeTime(String name)

Selects the write time of provided column.

This is a shortcut for fcall("writetime", QueryBuilder.column(name)).

Parameters:

name - the name of the column to select the write time of.

Returns:

this in-build SELECT statement

ttl

public Select.Selection ttl(String name)

Selects the ttl of provided column.

This is a shortcut for fcall("ttl", QueryBuilder.column(name)).

Parameters:

name - the name of the column to select the ttl of.

Returns:

this in-build SELECT statement

fcall

public Select.Selection fcall(String name,
                     Object... parameters)

Creates a function call.

Please note that the parameters are interpreted as values, and so fcall("textToBlob", "foo") will generate the string "textToBlob('foo')". If you want to generate "textToBlob(foo)", i.e. if the argument must be interpreted as a column name (in a select clause), you will need to use the QueryBuilder.column(java.lang.String) method, and so fcall("textToBlob", QueryBuilder.column(foo).