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
void	addColumnForOrdering(ColumnDefinition c)
void	addFunctionsTo(java.util.List<Function> functions)
protected int	addOrderingColumn(ColumnDefinition c)
boolean	containsAComplexColumn() Checks if this selection contains a complex column.
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, VariableSpecifications boundNames, boolean hasGroupBy)
protected int	getColumnIndex(ColumnDefinition c) Returns the index of the specified column
SelectionColumns	getColumnMapping()
java.util.List<ColumnDefinition>	getColumns()
java.util.Map<ColumnDefinition,java.lang.Integer>	getOrderingIndex(boolean isJson)
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(QueryOptions options)
Selection.ResultSetBuilder	resultSetBuilder(QueryOptions options, boolean isJson)
Selection.ResultSetBuilder	resultSetBuilder(QueryOptions options, boolean isJson, AggregationSpecification aggregationSpec)
static java.util.List<java.nio.ByteBuffer>	rowToJson(java.util.List<java.nio.ByteBuffer> row, ProtocolVersion protocolVersion, ResultSet.ResultMetadata metadata)
java.lang.String	toString()
static Selection	wildcard(CFMetaData cfm)
static Selection	wildcardWithGroupBy(CFMetaData cfm, VariableSpecifications boundNames)

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;

containsAComplexColumn

public boolean containsAComplexColumn()

Checks if this selection contains a complex column.

Returns:

true if this selection contains a multicell collection or UDT, false otherwise.

getOrderingIndex

public java.util.Map<ColumnDefinition,java.lang.Integer> getOrderingIndex(boolean isJson)

getResultMetadata

public ResultSet.ResultMetadata getResultMetadata(boolean isJson)

wildcard

public static Selection wildcard(CFMetaData cfm)

wildcardWithGroupBy

public static Selection wildcardWithGroupBy(CFMetaData cfm,
                                            VariableSpecifications boundNames)

forColumns

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

addColumnForOrdering

public void addColumnForOrdering(ColumnDefinition c)

addOrderingColumn

protected int addOrderingColumn(ColumnDefinition c)

addFunctionsTo

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

fromSelectors

public static Selection fromSelectors(CFMetaData cfm,
                                      java.util.List<RawSelector> rawSelectors,
                                      VariableSpecifications boundNames,
                                      boolean hasGroupBy)

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(QueryOptions options)
                                                                                 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(QueryOptions options,
                                                   boolean isJson)

resultSetBuilder

public Selection.ResultSetBuilder resultSetBuilder(QueryOptions options,
                                                   boolean isJson,
                                                   AggregationSpecification aggregationSpec)

isAggregate

public abstract boolean isAggregate()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

rowToJson

public static java.util.List<java.nio.ByteBuffer> rowToJson(java.util.List<java.nio.ByteBuffer> row,
                                                            ProtocolVersion protocolVersion,
                                                            ResultSet.ResultMetadata metadata)