Package org.nuxeo.ecm.directory.multi

Class MultiDirectoryExpressionEvaluator

java.lang.Object

org.nuxeo.ecm.directory.multi.MultiDirectoryExpressionEvaluator

public class MultiDirectoryExpressionEvaluator
extends Object

Evaluator for an Expression in the context of the various subdirectories of a MultiDirectory's source.

The result is a set of entry ids.

The strategy for evaluation is to delegate as much as possible of the evaluation of expressions to subdirectories themselves.

We do a depth-first evaluation of expressions, delaying actual evaluation while an expression's references all fall into the same subdirectory.

Since:

10.3

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MultiDirectoryExpressionEvaluator.IdsResult	Result is a set of entry ids.
static class	MultiDirectoryExpressionEvaluator.OperandResult	Result is an operand associated to at most one subdirectory.
static class	MultiDirectoryExpressionEvaluator.ReferenceRenamer	Renames the references according to a map.
static interface	MultiDirectoryExpressionEvaluator.Result	The result of an evaluation of an expression.

Field Summary

Fields

Modifier and Type	Field	Description
protected List<MultiDirectorySession.SubDirectoryInfo>	dirInfos
protected String	dirName
protected String	idField

Constructor Summary

Constructors

Constructor	Description
MultiDirectoryExpressionEvaluator(MultiDirectorySession.SourceInfo sourceInfo, String idField, String dirName)

Method Summary

Modifier and Type	Method	Description
Set<String>	eval(Expression expr)	Evaluates an expression and returns the set of matching ids.
protected MultiDirectoryExpressionEvaluator.Result	evalAndOr(Expression expr)
protected MultiDirectoryExpressionEvaluator.Result	evalExpression(Expression expr)
protected MultiDirectoryExpressionEvaluator.Result	evalMultiExpression(MultiExpression expr)
protected MultiDirectoryExpressionEvaluator.Result	evalOperand(Operand op)
protected MultiDirectoryExpressionEvaluator.Result	evalReference(Reference ref)
protected MultiDirectoryExpressionEvaluator.Result	evalSimpleExpression(Expression expr)
protected Set<String>	evaluate(MultiDirectoryExpressionEvaluator.OperandResult opr)	Evaluates an operand associated to a single directory and returns the set of matching ids.
protected Set<String>	evaluate(MultiDirectoryExpressionEvaluator.Result result)	Evaluates a result and returns the set of matching ids.
protected static Set<String>	intersection(Set<String> a, Set<String> b)	Set intersection.
protected static Set<String>	union(Set<String> a, Set<String> b)	Set union.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

dirInfos

protected final List<MultiDirectorySession.SubDirectoryInfo> dirInfos

idField

protected final String idField

dirName

protected final String dirName

Constructor Detail

MultiDirectoryExpressionEvaluator

public MultiDirectoryExpressionEvaluator(MultiDirectorySession.SourceInfo sourceInfo,
                                         String idField,
                                         String dirName)

Method Detail

eval

public Set<String> eval(Expression expr)

Evaluates an expression and returns the set of matching ids.

evalExpression

protected MultiDirectoryExpressionEvaluator.Result evalExpression(Expression expr)

evalSimpleExpression

protected MultiDirectoryExpressionEvaluator.Result evalSimpleExpression(Expression expr)

evalOperand

protected MultiDirectoryExpressionEvaluator.Result evalOperand(Operand op)

evalReference

protected MultiDirectoryExpressionEvaluator.Result evalReference(Reference ref)

evalAndOr

protected MultiDirectoryExpressionEvaluator.Result evalAndOr(Expression expr)

evalMultiExpression

protected MultiDirectoryExpressionEvaluator.Result evalMultiExpression(MultiExpression expr)

evaluate

protected Set<String> evaluate(MultiDirectoryExpressionEvaluator.Result result)

Evaluates a result and returns the set of matching ids.

evaluate

protected Set<String> evaluate(MultiDirectoryExpressionEvaluator.OperandResult opr)

Evaluates an operand associated to a single directory and returns the set of matching ids.

union

protected static Set<String> union(Set<String> a,
                                   Set<String> b)

Set union.

intersection

protected static Set<String> intersection(Set<String> a,
                                          Set<String> b)

Set intersection.