org.apache.cassandra.cql3.selection

Class Selection

java.lang.Object

org.apache.cassandra.cql3.selection.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(CFMetaData cfm, java.util.List<ColumnDefinition> columns, SelectionColumnMapping columnMapping, boolean collectTimestamps, boolean collectTTLs)

Method Summary

Modifier and Type	Method and Description
int	addColumnForOrdering(ColumnDefinition c)
void	addFunctionsTo(java.util.List<Function> functions)
boolean	containsACollection() Checks if this selection contains a collection.
boolean	containsOnlyStaticColumns() Checks if this selection contains only static columns.
boolean	containsStaticColumns() Checks if this selection contains static columns.
static Selection	forColumns(CFMetaData cfm, 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()
ResultSet.ResultMetadata	getResultMetadata(boolean isJson)
int	getResultSetIndex(ColumnDefinition c) Returns the index of the specified column within the resultset
abstract boolean	isAggregate()
boolean	isWildcard()
protected abstract org.apache.cassandra.cql3.selection.Selection.Selectors	newSelectors()
Selection.ResultSetBuilder	resultSetBuilder(boolean isJons)
java.lang.String	toString()
static Selection	wildcard(CFMetaData cfm)

Methods inherited from class java.lang.Object

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

Constructor Detail

Selection

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

Method Detail

isWildcard

public boolean isWildcard()

containsStaticColumns

public boolean containsStaticColumns()

Checks if this selection contains static columns.

Returns:

true if this selection contains static columns, false otherwise;

containsOnlyStaticColumns

public boolean containsOnlyStaticColumns()

Checks if this selection contains only static columns.

Returns:

true if this selection contains only static columns, false otherwise;

containsACollection

public boolean containsACollection()

Checks if this selection contains a collection.

Returns:

true if this selection contains a collection, false otherwise.

getResultMetadata

public ResultSet.ResultMetadata getResultMetadata(boolean isJson)

wildcard

public static Selection wildcard(CFMetaData cfm)

forColumns

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

addColumnForOrdering

public int addColumnForOrdering(ColumnDefinition c)

addFunctionsTo

public void addFunctionsTo(java.util.List<Function> functions)

fromSelectors

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

Throws:

InvalidRequestException

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

newSelectors

protected abstract org.apache.cassandra.cql3.selection.Selection.Selectors newSelectors()
                                                                                 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(boolean isJons)
                                            throws InvalidRequestException

Throws:

InvalidRequestException

isAggregate

public abstract boolean isAggregate()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object