org.apache.cassandra.cql3.statements

Class Selection

java.lang.Object

org.apache.cassandra.cql3.statements.Selection

public abstract class Selection
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Selection.ResultSetBuilder

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Selection(java.util.List<ColumnDefinition> columns, SelectionColumnMapping columnMapping, boolean collectTimestamps, boolean collectTTLs)
protected	Selection(java.util.List<ColumnDefinition> columns, SelectionColumnMapping columnMapping, java.util.List<ColumnSpecification> columnSpecifications, boolean collectTimestamps, boolean collectTTLs)

Method Summary

Modifier and Type	Method and Description
int	addColumnForOrdering(ColumnDefinition c)
static Selection	forColumns(java.util.List<ColumnDefinition> columns)
static Selection	fromSelectors(CFMetaData cfm, java.util.List<RawSelector> rawSelectors)
protected int	getColumnIndex(ColumnDefinition c) Returns the index of the specified column
SelectionColumns	getColumnMapping()
java.util.List<ColumnDefinition>	getColumns()
protected java.util.List<ColumnSpecification>	getColumnSpecifications()
ResultSet.Metadata	getResultMetadata()
int	getResultSetIndex(ColumnDefinition c) Returns the index of the specified column within the resultset
protected abstract java.util.List<java.nio.ByteBuffer>	handleRow(Selection.ResultSetBuilder rs)
boolean	isWildcard()
Selection.ResultSetBuilder	resultSetBuilder(long now)
static Selection	wildcard(CFMetaData cfm, boolean isCount, ColumnIdentifier countAlias)

Methods inherited from class java.lang.Object

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

Constructor Detail

Selection

protected Selection(java.util.List<ColumnDefinition> columns,
                    SelectionColumnMapping columnMapping,
                    boolean collectTimestamps,
                    boolean collectTTLs)

Selection

protected Selection(java.util.List<ColumnDefinition> columns,
                    SelectionColumnMapping columnMapping,
                    java.util.List<ColumnSpecification> columnSpecifications,
                    boolean collectTimestamps,
                    boolean collectTTLs)

Method Detail

isWildcard

public boolean isWildcard()

getResultMetadata

public ResultSet.Metadata getResultMetadata()

wildcard

public static Selection wildcard(CFMetaData cfm,
                                 boolean isCount,
                                 ColumnIdentifier countAlias)

forColumns

public static Selection forColumns(java.util.List<ColumnDefinition> columns)

addColumnForOrdering

public int addColumnForOrdering(ColumnDefinition c)

getResultSetIndex

public int getResultSetIndex(ColumnDefinition c)

Returns the index of the specified column within the resultset

Parameters:

c - the column

Returns:

the index of the specified column within the resultset or -1

getColumnIndex

protected final int getColumnIndex(ColumnDefinition c)

Returns the index of the specified column

Parameters:

c - the column

Returns:

the index of the specified column or -1

fromSelectors

public static Selection fromSelectors(CFMetaData cfm,
                                      java.util.List<RawSelector> rawSelectors)
                               throws InvalidRequestException

Throws:

InvalidRequestException

handleRow

protected abstract java.util.List<java.nio.ByteBuffer> handleRow(Selection.ResultSetBuilder rs)
                                                          throws InvalidRequestException

Throws:

InvalidRequestException

getColumns

public java.util.List<ColumnDefinition> getColumns()

Returns:

the list of CQL3 columns value this SelectionClause needs.

getColumnMapping

public SelectionColumns getColumnMapping()

Returns:

the mappings between resultset columns and the underlying columns

resultSetBuilder

public Selection.ResultSetBuilder resultSetBuilder(long now)

getColumnSpecifications

protected java.util.List<ColumnSpecification> getColumnSpecifications()