com.datastax.driver.core.querybuilder
Class Select

java.lang.Object
  com.datastax.driver.core.Query
      com.datastax.driver.core.Statement
          com.datastax.driver.core.querybuilder.Select

public class Select
extends Statement

A built SELECT statement.

Nested Class Summary

static class	Select.Builder An in-construction SELECT statement.
static class	Select.Selection An Selection clause for an in-construction SELECT statement.
static class	Select.Where The WHERE clause of a SELECT statement.

Field Summary

protected Boolean

isCounterOp

Method Summary

Select	allowFiltering() Adds an ALLOW FILTERING directive to this statement.
protected String	buildQueryString()
String	getQueryString() Returns the query string for this statement.
ByteBuffer	getRoutingKey() Returns the routing key (in binary raw form) to use for token aware routing of this query.
protected boolean	isCounterOp()
Select	limit(int limit) Adds a LIMIT clause to this statement.
Select	orderBy(Ordering... orderings) Adds an ORDER BY clause to this statement.
protected void	setCounterOp(boolean isCounterOp)
protected void	setDirty()
Select.Where	where() Returns a Where statement for this query without adding clause.
Select.Where	where(Clause clause) Adds a WHERE clause to this statement.

Methods inherited from class com.datastax.driver.core.Statement

toString

Methods inherited from class com.datastax.driver.core.Query

disableTracing, enableTracing, getConsistencyLevel, getRetryPolicy, isTracing, setConsistencyLevel, setRetryPolicy

Methods inherited from class java.lang.Object

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

Field Detail

isCounterOp

protected Boolean isCounterOp

Method Detail

buildQueryString

protected String buildQueryString()

where

public Select.Where where(Clause clause)

Adds a WHERE clause to this statement. This is a shorter/more readable version for where().and(clause).

Parameters:

clause - the clause to add.

Returns:

the where clause of this query to which more clause can be added.

where

public Select.Where where()

Returns a Where statement for this query without adding clause.

Returns:

the where clause of this query to which more clause can be added.

orderBy

public Select orderBy(Ordering... orderings)

Adds an ORDER BY clause to this statement.

Parameters:

orderings - the orderings to define for this query.

Returns:

this statement.

Throws:

IllegalStateException - if an ORDER BY clause has already been provided.

limit

public Select limit(int limit)

Adds a LIMIT clause to this statement.

Parameters:

limit - the limit to set.

Returns:

this statement.

Throws:

IllegalArgumentException - if limit &gte; 0.

IllegalStateException - if a LIMIT clause has already been provided.

allowFiltering

public Select allowFiltering()

Adds an ALLOW FILTERING directive to this statement.

Returns:

this statement.

getQueryString

public String getQueryString()

Description copied from class: Statement

Returns the query string for this statement.

Specified by:

getQueryString in class Statement

Returns:

a valid CQL query string.

setDirty

protected void setDirty()

isCounterOp

protected boolean isCounterOp()

setCounterOp

protected void setCounterOp(boolean isCounterOp)

getRoutingKey

public ByteBuffer getRoutingKey()

Description copied from class: Query

Returns the routing key (in binary raw form) to use for token aware routing of this query.

The routing key is optional in that implementers are free to return null. The routing key is an hint used for token-aware routing (see TokenAwarePolicy), and if provided should correspond to the binary value for the query partition key. However, not providing a routing key never causes a query to fail and if the load balancing policy used is not token aware, then the routing key can be safely ignored.

Specified by:

getRoutingKey in class Query

Returns:

the routing key for this query or null.