com.espertech.esper.epl.lookup

Class IndexedPropDesc

java.lang.Object

com.espertech.esper.epl.lookup.IndexedPropDesc

All Implemented Interfaces:

Comparable

public class IndexedPropDesc
extends Object
implements Comparable

Holds property information for joined properties in a lookup.

Constructor Summary

Constructors

Constructor and Description
IndexedPropDesc(String indexPropName, Class coercionType) Ctor.

Method Summary

Modifier and Type	Method and Description
static boolean	compare(List<IndexedPropDesc> first, List<IndexedPropDesc> second)
int	compareTo(Object o)
boolean	equals(Object o)
Class	getCoercionType() Returns the coercion type of key to index field.
static Class[]	getCoercionTypes(IndexedPropDesc[] descList) Returns the key coercion types.
static String[]	getIndexProperties(IndexedPropDesc[] descList) Returns the index property names given an array of descriptors.
static String[]	getIndexProperties(List<IndexedPropDesc> descList)
String	getIndexPropName() Returns the property name of the indexed field.
static int	getPropertyIndex(String propertyName, IndexedPropDesc[] descList)
int	hashCode()
static void	toQueryPlan(StringWriter writer, IndexedPropDesc[] indexedProps)

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexedPropDesc

public IndexedPropDesc(String indexPropName,
                       Class coercionType)

Ctor.

Parameters:

indexPropName - is the property name of the indexed field

coercionType - is the type to coerce to

Method Detail

getIndexPropName

public String getIndexPropName()

Returns the property name of the indexed field.

Returns:

property name of indexed field

getCoercionType

public Class getCoercionType()

Returns the coercion type of key to index field.

Returns:

type to coerce to

getIndexProperties

public static String[] getIndexProperties(IndexedPropDesc[] descList)

Returns the index property names given an array of descriptors.

Parameters:

descList - descriptors of joined properties

Returns:

array of index property names

getIndexProperties

public static String[] getIndexProperties(List<IndexedPropDesc> descList)

getPropertyIndex

public static int getPropertyIndex(String propertyName,
                                   IndexedPropDesc[] descList)

getCoercionTypes

public static Class[] getCoercionTypes(IndexedPropDesc[] descList)

Returns the key coercion types.

Parameters:

descList - a list of descriptors

Returns:

key coercion types

compareTo

public int compareTo(Object o)

Specified by:

compareTo in interface Comparable

equals

public boolean equals(Object o)

Overrides:

equals in class Object

compare

public static boolean compare(List<IndexedPropDesc> first,
                              List<IndexedPropDesc> second)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toQueryPlan

public static void toQueryPlan(StringWriter writer,
                               IndexedPropDesc[] indexedProps)