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

Class Literal

java.lang.Object

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

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

All Implemented Interfaces:

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

public final class Literal
extends Expression

An expression that represents a constant value.

Nested Class Summary

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

Expression.VariableFinder

Field Summary

Fields

Modifier and Type	Field and Description
static Literal	FALSE_CONSTANT
static Literal	NULL_CONSTANT
static Literal	TRUE_CONSTANT
java.lang.Object	value

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

Method Summary

Modifier and Type	Method and Description
int	compareTo(Expression e)
static Literal	create(java.lang.Object value)
boolean	equals(java.lang.Object o)
java.lang.Object	evaluate(IEvaluationContext context) Evaluate this expression with given context and variables.
int	getExpressionType() Returns the expression type (see TYPE_xxx constants).
java.lang.String	getOperator()
int	getPriority()
int	hashCode()
void	toLDAPString(java.lang.StringBuffer buf) Appends the an LDAP filter representation of this expression to the collector.
void	toString(java.lang.StringBuffer bld, Variable rootVariable)

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

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

Methods inherited from class java.lang.Object

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

Field Detail

FALSE_CONSTANT

public static final Literal FALSE_CONSTANT

NULL_CONSTANT

public static final Literal NULL_CONSTANT

TRUE_CONSTANT

public static final Literal TRUE_CONSTANT

value

public final java.lang.Object value

Method Detail

create

public static Literal create(java.lang.Object value)

compareTo

public int compareTo(Expression e)

Specified by:

compareTo in interface java.lang.Comparable<Expression>

Overrides:

compareTo in class Expression

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class Expression

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.

getExpressionType

public int getExpressionType()

Description copied from interface: IExpression

Returns the expression type (see TYPE_xxx constants).

getOperator

public java.lang.String getOperator()

Specified by:

getOperator in class Expression

getPriority

public int getPriority()

Specified by:

getPriority in class Expression

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toLDAPString

public void toLDAPString(java.lang.StringBuffer buf)

Description copied from interface: IExpression

Appends the an LDAP filter representation of this expression to the collector.

Specified by:

toLDAPString in interface IExpression

Overrides:

toLDAPString in class Expression

toString

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

Specified by:

toString in class Expression