Package com.espertech.esper.common.internal.epl.join.lookup

Class IndexedPropDesc

java.lang.Object

com.espertech.esper.common.internal.epl.join.lookup.IndexedPropDesc

All Implemented Interfaces:

Comparable

public class IndexedPropDesc
extends Object
implements Comparable

Holds property information for joined properties in a lookup.

Field Summary

Fields

Modifier and Type	Field	Description
static final EPTypeClass	EPTYPE

Constructor Summary

Constructors

Constructor	Description
IndexedPropDesc(String indexPropName, EPTypeClass coercionType)	Ctor.

Method Summary

Modifier and Type	Method	Description
static boolean	compare(List<IndexedPropDesc> first, List<IndexedPropDesc> second)
int	compareTo(Object o)
boolean	equals(Object o)
EPTypeClass	getCoercionType()	Returns the coercion type of key to index field.
static EPTypeClass[]	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()
CodegenExpression	make()
static CodegenExpression	makeArray(IndexedPropDesc[] items)
static CodegenExpression	makeArray(Collection<IndexedPropDesc> items)
static void	toQueryPlan(StringWriter writer, IndexedPropDesc[] indexedProps)

Methods inherited from class java.lang.Object

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

Field Details

EPTYPE

public static final EPTypeClass EPTYPE

Constructor Details

IndexedPropDesc

public IndexedPropDesc(String indexPropName,
 EPTypeClass coercionType)

Ctor.

Parameters:

indexPropName - is the property name of the indexed field

coercionType - is the type to coerce to

Method Details

make

public CodegenExpression make()

getIndexPropName

public String getIndexPropName()

Returns the property name of the indexed field.

Returns:

property name of indexed field

getCoercionType

public EPTypeClass 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 EPTypeClass[] 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)

makeArray

public static CodegenExpression makeArray(Collection<IndexedPropDesc> items)

makeArray

public static CodegenExpression makeArray(IndexedPropDesc[] items)