Package org.apache.cassandra.db.filter

Class RowFilter.Expression

java.lang.Object

org.apache.cassandra.db.filter.RowFilter.Expression

Direct Known Subclasses:

RowFilter.CustomExpression, RowFilter.SimpleExpression, RowFilter.UserExpression

Enclosing class:

RowFilter

public abstract static class RowFilter.Expression
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static enum	RowFilter.Expression.Kind

Field Summary

Fields

Modifier and Type	Field	Description
protected final ColumnMetadata	column
protected final Operator	operator
protected final ByteBuffer	value

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Expression(ColumnMetadata column, Operator operator, ByteBuffer value)

Method Summary

Modifier and Type	Method	Description
ColumnMetadata	column()
boolean	equals(Object o)
ByteBuffer	getIndexValue()	If this expression is used to query an index, the value to use as partition key for that index query.
protected ByteBuffer	getValue(TableMetadata metadata, DecoratedKey partitionKey, Row row, long nowInSec)
int	hashCode()
boolean	isContains()	Checks if the operator of this IndexExpression is a CONTAINS operator.
boolean	isContainsKey()	Checks if the operator of this IndexExpression is a CONTAINS_KEY operator.
boolean	isCustom()
abstract boolean	isSatisfiedBy(TableMetadata metadata, DecoratedKey partitionKey, Row row, long nowInSec)	Returns whether the provided row satisfied this expression or not.
boolean	isUserDefined()
protected abstract RowFilter.Expression.Kind	kind()
Operator	operator()
String	toCQLString()	Returns a CQL representation of this expression.
String	toString()
protected abstract String	toString(boolean cql)
void	validate()
void	validateForIndexing()	Deprecated. See CASSANDRA-6377

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

column

protected final ColumnMetadata column

operator

protected final Operator operator

value

protected final ByteBuffer value

Constructor Details

Expression

protected Expression(ColumnMetadata column,
 Operator operator,
 ByteBuffer value)

Method Details

kind

protected abstract RowFilter.Expression.Kind kind()

isCustom

public boolean isCustom()

isUserDefined

public boolean isUserDefined()

column

public ColumnMetadata column()

operator

public Operator operator()

isContains

public boolean isContains()

Checks if the operator of this IndexExpression is a CONTAINS operator.

Returns:

true if the operator of this IndexExpression is a CONTAINS operator, false otherwise.

isContainsKey

public boolean isContainsKey()

Checks if the operator of this IndexExpression is a CONTAINS_KEY operator.

Returns:

true if the operator of this IndexExpression is a CONTAINS_KEY operator, false otherwise.

getIndexValue

public ByteBuffer getIndexValue()

If this expression is used to query an index, the value to use as partition key for that index query.

validate

public void validate()

validateForIndexing

@Deprecated(since="3.5")
public void validateForIndexing()

Deprecated.

See CASSANDRA-6377

isSatisfiedBy

public abstract boolean isSatisfiedBy(TableMetadata metadata,
 DecoratedKey partitionKey,
 Row row,
 long nowInSec)

Returns whether the provided row satisfied this expression or not.

Parameters:

metadata -

partitionKey - the partition key for row to check.

row - the row to check. It should *not* contain deleted cells (i.e. it should come from a RowIterator).

Returns:

whether the row is satisfied by this expression.

getValue

protected ByteBuffer getValue(TableMetadata metadata,
 DecoratedKey partitionKey,
 Row row,
 long nowInSec)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

toCQLString

public String toCQLString()

Returns a CQL representation of this expression.

Returns:

a CQL representation of this expression

toString

protected abstract String toString(boolean cql)