Package org.apache.jackrabbit.oak.query.ast

Class DynamicOperandImpl

java.lang.Object

org.apache.jackrabbit.oak.query.ast.DynamicOperandImpl

Direct Known Subclasses:

CoalesceImpl, FirstImpl, FullTextSearchScoreImpl, LengthImpl, LowerCaseImpl, NodeLocalNameImpl, NodeNameImpl, PathImpl, PropertyValueImpl, UpperCaseImpl

public abstract class DynamicOperandImpl
extends Object

The base class for dynamic operands (such as a function or property).

Field Summary

Fields

Modifier and Type	Field	Description
protected QueryImpl	query

Constructor Summary

Constructors

Constructor	Description
DynamicOperandImpl()

Method Summary

Modifier and Type	Method	Description
abstract boolean	canRestrictSelector(SelectorImpl s)	Check whether the condition can be applied to a selector (to restrict the selector).
protected PropertyValue	convertValueToType(PropertyValue v, PropertyValue targetType)
@NotNull org.apache.jackrabbit.oak.query.ast.AstElement	copyOf()
abstract DynamicOperandImpl	createCopy()
abstract PropertyValue	currentProperty()
boolean	equals(Object other)
abstract String	getFunction(SelectorImpl s)	Get the function of a function-based index, in Polish notation.
protected String	getLocalPath(String path)	Calculate the session local path (the path excluding the workspace name) if possible.
abstract QueryIndex.OrderEntry	getOrderEntry(SelectorImpl s, OrderingImpl o)	Create an entry for the "order by" list for a given filter.
String	getOrderEntryPropertyName(SelectorImpl s)
abstract PropertyExistenceImpl	getPropertyExistence()	Get the property existence condition for this operand, if this operand is used as part of a condition.
abstract Set<SelectorImpl>	getSelectors()	Get the set of selectors for this operand.
int	hashCode()
protected String	normalizePath(String path)	Validate and normalize the path.
protected String	normalizePropertyName(String propertyName)	Normalize the property name (including namespace remapping).
protected String	protect(Object expression)
protected static String	quote(String pathOrName)
protected static String	quoteJson(String string)
abstract void	restrict(FilterImpl f, Operator operator, PropertyValue v)	Apply a restriction of type "this = value" to the given filter.
abstract void	restrictList(FilterImpl f, List<PropertyValue> list)	Apply a restriction of type "this in (list)" to the given filter.
void	setQuery(QueryImpl query)
boolean	supportsRangeConditions()

Methods inherited from class java.lang.Object

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

Field Detail

query

protected QueryImpl query

Constructor Detail

DynamicOperandImpl

public DynamicOperandImpl()

Method Detail

currentProperty

public abstract PropertyValue currentProperty()

restrict

public abstract void restrict(FilterImpl f,
                              Operator operator,
                              PropertyValue v)

Apply a restriction of type "this = value" to the given filter.

Parameters:

f - the filter where the restriction is applied.

operator - the operator (for example "=").

v - the value

restrictList

public abstract void restrictList(FilterImpl f,
                                  List<PropertyValue> list)

Apply a restriction of type "this in (list)" to the given filter.

Parameters:

f - the filter where the restriction is applied.

list - the list of values

getFunction

public abstract String getFunction(SelectorImpl s)

Get the function of a function-based index, in Polish notation.

Parameters:

s - the selector

Returns:

the function, or null if not supported

canRestrictSelector

public abstract boolean canRestrictSelector(SelectorImpl s)

Check whether the condition can be applied to a selector (to restrict the selector). The method may return true if the operand can be evaluated when the given selector and all previous selectors in the join can be evaluated.

Parameters:

s - the selector

Returns:

true if the condition can be applied

supportsRangeConditions

public boolean supportsRangeConditions()

getPropertyExistence

public abstract PropertyExistenceImpl getPropertyExistence()

Get the property existence condition for this operand, if this operand is used as part of a condition.

Returns:

the property existence condition, or null if none

getSelectors

public abstract Set<SelectorImpl> getSelectors()

Get the set of selectors for this operand.

Returns:

the set of selectors

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

createCopy

public abstract DynamicOperandImpl createCopy()

getOrderEntry

public abstract QueryIndex.OrderEntry getOrderEntry(SelectorImpl s,
                                                    OrderingImpl o)

Create an entry for the "order by" list for a given filter.

Parameters:

s - the selector

o - the ordering

Returns:

the entry

getOrderEntryPropertyName

public String getOrderEntryPropertyName(SelectorImpl s)

Parameters:

s -

Returns:

the property name as defined in the OrderEntry for the DynamicOperand

protect

protected String protect(Object expression)

quote

protected static String quote(String pathOrName)

quoteJson

protected static String quoteJson(String string)

setQuery

public void setQuery(QueryImpl query)

normalizePropertyName

protected String normalizePropertyName(String propertyName)

Normalize the property name (including namespace remapping). Asterisks are kept.

Parameters:

propertyName - the property name to normalize

Returns:

the normalized (oak-) property name

normalizePath

protected String normalizePath(String path)

Validate and normalize the path.

Parameters:

path - the path to validate

Returns:

the validated and normalized path

convertValueToType

protected PropertyValue convertValueToType(PropertyValue v,
                                           PropertyValue targetType)

getLocalPath

protected String getLocalPath(String path)

Calculate the session local path (the path excluding the workspace name) if possible.

Parameters:

path - the absolute path

Returns:

the session local path, or null if not within this workspace

copyOf

@NotNull
public @NotNull org.apache.jackrabbit.oak.query.ast.AstElement copyOf()

Returns:

a clone of self. Default implementation in AstElement returns same reference to this.