org.apache.ambari.server.api.predicate.operators

Interface Operator

All Known Subinterfaces:

LogicalOperator, RelationalOperator

All Known Implementing Classes:

AbstractOperator, AndOperator, EqualsOperator, FilterOperator, GreaterEqualsOperator, GreaterOperator, InOperator, IsEmptyOperator, LessEqualsOperator, LessOperator, NotEqualsOperator, NotOperator, OrOperator

public interface Operator

Operator representation.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Operator.TYPE Operator types.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_OP_PRECEDENCE The highest base operator precedence level.

Method Summary

Modifier and Type	Method and Description
int	getPrecedence() Obtain the precedence of the operator.
Operator.TYPE	getType() Get the operator type.

Field Detail

MAX_OP_PRECEDENCE

static final int MAX_OP_PRECEDENCE

The highest base operator precedence level.

See Also:

Constant Field Values

Method Detail

getType

Operator.TYPE getType()

Get the operator type.

Returns:

the operator type

getPrecedence

int getPrecedence()

Obtain the precedence of the operator. This value is calculated based on the operators base precedence and the context of the surrounding expressions. Higher precedence values have higher precedence.

Returns:

the precedence of this operator in it's current context