org.eclipse.equinox.internal.p2.metadata.expression

Class Function

java.lang.Object

org.eclipse.equinox.internal.p2.metadata.expression.Expression

org.eclipse.equinox.internal.p2.metadata.expression.NAry

org.eclipse.equinox.internal.p2.metadata.expression.Function

All Implemented Interfaces:

java.lang.Comparable<Expression>, IExpressionConstants, IExpression

Direct Known Subclasses:

BooleanFunction, ClassFunction, FilterFunction, RangeFunction, SetFunction, VersionFunction, WrappedIQuery

public abstract class Function
extends NAry

An expression that represents a function such as filter(<expr>) or version(<expr>)

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.equinox.internal.p2.metadata.expression.Expression

Expression.VariableFinder

Field Summary

Fields inherited from class org.eclipse.equinox.internal.p2.metadata.expression.NAry

operands

Fields inherited from interface org.eclipse.equinox.p2.metadata.expression.IExpression

TYPE_ALL, TYPE_AND, TYPE_ARRAY, TYPE_ASSIGNMENT, TYPE_AT, TYPE_COLLECT, TYPE_CONDITION, TYPE_EQUALS, TYPE_EXISTS, TYPE_FIRST, TYPE_FLATTEN, TYPE_FUNCTION, TYPE_GREATER, TYPE_GREATER_EQUAL, TYPE_INTERSECT, TYPE_LAMBDA, TYPE_LATEST, TYPE_LESS, TYPE_LESS_EQUAL, TYPE_LIMIT, TYPE_LITERAL, TYPE_MATCHES, TYPE_MEMBER, TYPE_NOT, TYPE_NOT_EQUALS, TYPE_OR, TYPE_PARAMETER, TYPE_PIPE, TYPE_SELECT, TYPE_TRAVERSE, TYPE_UNION, TYPE_UNIQUE, TYPE_VARIABLE

Fields inherited from interface org.eclipse.equinox.internal.p2.metadata.expression.IExpressionConstants

KEYWORD_ALL, KEYWORD_BOOLEAN, KEYWORD_CLASS, KEYWORD_COLLECT, KEYWORD_EXISTS, KEYWORD_FALSE, KEYWORD_FILTER, KEYWORD_FIRST, KEYWORD_FLATTEN, KEYWORD_INTERSECT, KEYWORD_IQUERY, KEYWORD_LATEST, KEYWORD_LIMIT, KEYWORD_LOCALIZED_KEYS, KEYWORD_LOCALIZED_MAP, KEYWORD_LOCALIZED_PROPERTY, KEYWORD_NULL, KEYWORD_RANGE, KEYWORD_SATISFIES_ALL, KEYWORD_SATISFIES_ANY, KEYWORD_SELECT, KEYWORD_SET, KEYWORD_TRAVERSE, KEYWORD_TRUE, KEYWORD_UNION, KEYWORD_UNIQUE, KEYWORD_VERSION, OPERATOR_AND, OPERATOR_ARRAY, OPERATOR_ASSIGN, OPERATOR_AT, OPERATOR_EACH, OPERATOR_ELSE, OPERATOR_EQUALS, OPERATOR_GT, OPERATOR_GT_EQUAL, OPERATOR_IF, OPERATOR_LT, OPERATOR_LT_EQUAL, OPERATOR_MATCHES, OPERATOR_MEMBER, OPERATOR_NOT, OPERATOR_NOT_EQUALS, OPERATOR_OR, OPERATOR_PARAMETER, PRIORITY_AND, PRIORITY_ASSIGNMENT, PRIORITY_BINARY, PRIORITY_COLLECTION, PRIORITY_COMMA, PRIORITY_CONDITION, PRIORITY_FUNCTION, PRIORITY_LAMBDA, PRIORITY_LITERAL, PRIORITY_MAX, PRIORITY_MEMBER, PRIORITY_NOT, PRIORITY_OR, PRIORITY_VARIABLE, VARIABLE_EVERYTHING, VARIABLE_THIS

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Function(Expression[] operands)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(IEvaluationContext context) Evaluate this expression with given context and variables.
java.util.Iterator<?>	evaluateAsIterator(IEvaluationContext context)
int	getExpressionType() Returns the expression type (see TYPE_xxx constants).
int	getPriority()
void	toString(java.lang.StringBuffer bld, Variable rootVariable)

Methods inherited from class org.eclipse.equinox.internal.p2.metadata.expression.NAry

accept, compareTo, equals, getOperator, hashCode

Methods inherited from class org.eclipse.equinox.internal.p2.metadata.expression.Expression

appendOperand, assertLength, assertLength, compare, elementsToString, equals, getIndexCandidateMembers, hashCode, isReferenceTo, needsTranslationSupport, toLDAPString, toLDAPString, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Function

protected Function(Expression[] operands)

Method Detail

evaluate

public java.lang.Object evaluate(IEvaluationContext context)

Description copied from class: Expression

Evaluate this expression with given context and variables.

Specified by:

evaluate in interface IExpression

Specified by:

evaluate in class Expression

Parameters:

context - The evaluation context

Returns:

The result of the evaluation.

evaluateAsIterator

public java.util.Iterator<?> evaluateAsIterator(IEvaluationContext context)

Overrides:

evaluateAsIterator in class Expression

getExpressionType

public int getExpressionType()

Description copied from interface: IExpression

Returns the expression type (see TYPE_xxx constants).

getPriority

public int getPriority()

Specified by:

getPriority in class Expression

toString

public void toString(java.lang.StringBuffer bld,
                     Variable rootVariable)

Overrides:

toString in class NAry