/**************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package com.espertech.esper.event.property;
import com.espertech.esper.client.EventPropertyGetter;
import com.espertech.esper.client.EventType;
import com.espertech.esper.event.*;
import com.espertech.esper.event.map.*;
import com.espertech.esper.event.bean.*;
import com.espertech.esper.event.xml.*;
import com.espertech.esper.event.xml.DOMIndexedGetter;
import com.espertech.esper.util.JavaClassHelper;
import net.sf.cglib.reflect.FastClass;
import net.sf.cglib.reflect.FastMethod;
import java.io.StringWriter;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.List;
/**
* Represents an indexed property or array property, ie. an 'value' property with read method getValue(int index)
* or a 'array' property via read method getArray() returning an array.
*/
public class IndexedProperty extends PropertyBase
{
private int index;
public IndexedProperty(String propertyName) {
super(propertyName);
}
/**
* Ctor.
* @param propertyName is the property name
* @param index is the index to use to access the property value
*/
public IndexedProperty(String propertyName, int index)
{
super(propertyName);
this.index = index;
}
public boolean isDynamic()
{
return false;
}
public String[] toPropertyArray()
{
return new String[] {this.getPropertyNameAtomic()};
}
/**
* Returns index for indexed access.
* @return index value
*/
public int getIndex()
{
return index;
}
public EventPropertyGetterAndIndexed getGetter(BeanEventType eventType, EventAdapterService eventAdapterService)
{
FastClass fastClass = eventType.getFastClass();
InternalEventPropDescriptor propertyDesc = eventType.getIndexedProperty(propertyNameAtomic);
if (propertyDesc != null)
{
if (fastClass != null)
{
Method method = propertyDesc.getReadMethod();
FastMethod fastMethod = fastClass.getMethod(method);
return new KeyedFastPropertyGetter(fastMethod, index, eventAdapterService);
}
else
{
return new KeyedMethodPropertyGetter(propertyDesc.getReadMethod(), index, eventAdapterService);
}
}
// Try the array as a simple property
propertyDesc = eventType.getSimpleProperty(propertyNameAtomic);
if (propertyDesc == null)
{
return null;
}
Class returnType = propertyDesc.getReturnType();
if (returnType.isArray())
{
if (propertyDesc.getReadMethod() != null)
{
Method method = propertyDesc.getReadMethod();
if (fastClass != null)
{
FastMethod fastMethod = fastClass.getMethod(method);
return new ArrayFastPropertyGetter(fastMethod, index, eventAdapterService);
}
else
{
return new ArrayMethodPropertyGetter(method, index, eventAdapterService);
}
}
else
{
Field field = propertyDesc.getAccessorField();
return new ArrayFieldPropertyGetter(field, index, eventAdapterService);
}
}
else if (JavaClassHelper.isImplementsInterface(returnType, List.class))
{
if (propertyDesc.getReadMethod() != null)
{
Method method = propertyDesc.getReadMethod();
if (fastClass != null)
{
FastMethod fastMethod = fastClass.getMethod(method);
return new ListFastPropertyGetter(method, fastMethod, index, eventAdapterService);
}
else
{
return new ListMethodPropertyGetter(method, index, eventAdapterService);
}
}
else
{
Field field = propertyDesc.getAccessorField();
return new ListFieldPropertyGetter(field, index, eventAdapterService);
}
}
else if (JavaClassHelper.isImplementsInterface(returnType, Iterable.class))
{
if (propertyDesc.getReadMethod() != null)
{
Method method = propertyDesc.getReadMethod();
if (fastClass != null)
{
FastMethod fastMethod = fastClass.getMethod(method);
return new IterableFastPropertyGetter(method, fastMethod, index, eventAdapterService);
}
else
{
return new IterableMethodPropertyGetter(method, index, eventAdapterService);
}
}
else
{
Field field = propertyDesc.getAccessorField();
return new IterableFieldPropertyGetter(field, index, eventAdapterService);
}
}
return null;
}
public GenericPropertyDesc getPropertyTypeGeneric(BeanEventType eventType, EventAdapterService eventAdapterService)
{
InternalEventPropDescriptor descriptor = eventType.getIndexedProperty(propertyNameAtomic);
if (descriptor != null)
{
return new GenericPropertyDesc(descriptor.getReturnType());
}
// Check if this is an method returning array which is a type of simple property
descriptor = eventType.getSimpleProperty(propertyNameAtomic);
if (descriptor == null)
{
return null;
}
Class returnType = descriptor.getReturnType();
if (returnType.isArray())
{
return new GenericPropertyDesc(returnType.getComponentType());
}
else if (JavaClassHelper.isImplementsInterface(returnType, Iterable.class))
{
if (descriptor.getReadMethod() != null)
{
Class genericType = JavaClassHelper.getGenericReturnType(descriptor.getReadMethod(), false);
return new GenericPropertyDesc(genericType);
}
else if (descriptor.getAccessorField() != null)
{
Class genericType = JavaClassHelper.getGenericFieldType(descriptor.getAccessorField(), false);
return new GenericPropertyDesc(genericType);
}
else
{
return null;
}
}
return null;
}
public Class getPropertyType(BeanEventType eventType, EventAdapterService eventAdapterService)
{
InternalEventPropDescriptor descriptor = eventType.getIndexedProperty(propertyNameAtomic);
if (descriptor != null)
{
return descriptor.getReturnType();
}
// Check if this is an method returning array which is a type of simple property
descriptor = eventType.getSimpleProperty(propertyNameAtomic);
if (descriptor == null)
{
return null;
}
Class returnType = descriptor.getReturnType();
if (returnType.isArray())
{
return returnType.getComponentType();
}
else if (JavaClassHelper.isImplementsInterface(returnType, Iterable.class))
{
if (descriptor.getReadMethod() != null)
{
return JavaClassHelper.getGenericReturnType(descriptor.getReadMethod(), false);
}
else if (descriptor.getAccessorField() != null)
{
return JavaClassHelper.getGenericFieldType(descriptor.getAccessorField(), false);
}
else
{
return null;
}
}
return null;
}
public Class getPropertyTypeMap(Map optionalMapPropTypes, EventAdapterService eventAdapterService)
{
Object type = optionalMapPropTypes.get(propertyNameAtomic);
if (type == null)
{
return null;
}
if (type instanceof String) // resolve a property that is a map event type
{
String nestedName = type.toString();
boolean isArray = EventTypeUtility.isPropertyArray(nestedName);
if (isArray) {
nestedName = EventTypeUtility.getPropertyRemoveArray(nestedName);
}
EventType innerType = eventAdapterService.getExistsTypeByName(nestedName);
if (!(innerType instanceof MapEventType))
{
return null;
}
if (!isArray)
{
return null; // must be declared as an index to use array notation
}
else
{
return Map[].class;
}
}
else {
if (!(type instanceof Class))
{
return null;
}
if (!((Class) type).isArray())
{
return null;
}
return ((Class) type).getComponentType();
}
}
public MapEventPropertyGetterAndIndexed getGetterMap(Map optionalMapPropTypes, EventAdapterService eventAdapterService)
{
Object type = optionalMapPropTypes.get(propertyNameAtomic);
if (type == null)
{
return null;
}
if (type instanceof String) // resolve a property that is a map event type
{
String nestedName = type.toString();
boolean isArray = EventTypeUtility.isPropertyArray(nestedName);
if (isArray) {
nestedName = EventTypeUtility.getPropertyRemoveArray(nestedName);
}
EventType innerType = eventAdapterService.getExistsTypeByName(nestedName);
if (!(innerType instanceof MapEventType))
{
return null;
}
if (!isArray)
{
return null; // must be declared as an array to use an indexed notation
}
else
{
return new MapArrayMaptypedUndPropertyGetter(this.propertyNameAtomic, index, eventAdapterService, innerType);
}
}
else {
if (!(type instanceof Class))
{
return null;
}
if (!((Class) type).isArray())
{
return null;
}
Class componentType = ((Class)type).getComponentType();
// its an array
return new MapArrayPOJOEntryIndexedPropertyGetter(propertyNameAtomic, index, eventAdapterService, componentType);
}
}
public void toPropertyEPL(StringWriter writer)
{
writer.append(propertyNameAtomic);
writer.append("[");
writer.append(Integer.toString(index));
writer.append("]");
}
public EventPropertyGetter getGetterDOM()
{
return new DOMIndexedGetter(propertyNameAtomic, index, null);
}
public EventPropertyGetter getGetterDOM(SchemaElementComplex complexProperty, EventAdapterService eventAdapterService, BaseXMLEventType eventType, String propertyExpression)
{
for (SchemaElementSimple simple : complexProperty.getSimpleElements())
{
if (!simple.isArray())
{
continue;
}
if (!simple.getName().equals(propertyNameAtomic))
{
continue;
}
return new DOMIndexedGetter(propertyNameAtomic, index, null);
}
for (SchemaElementComplex complex : complexProperty.getChildren())
{
if (!complex.isArray())
{
continue;
}
if (!complex.getName().equals(propertyNameAtomic))
{
continue;
}
return new DOMIndexedGetter(propertyNameAtomic, index, new FragmentFactoryDOMGetter(eventAdapterService, eventType, propertyExpression));
}
return null;
}
public SchemaItem getPropertyTypeSchema(SchemaElementComplex complexProperty, EventAdapterService eventAdapterService)
{
for (SchemaElementSimple simple : complexProperty.getSimpleElements())
{
if (!simple.isArray())
{
continue;
}
if (!simple.getName().equals(propertyNameAtomic))
{
continue;
}
// return the simple as a non-array since an index is provided
return new SchemaElementSimple(simple.getName(), simple.getNamespace(), simple.getXsSimpleType(), simple.getTypeName(), false, simple.getFractionDigits());
}
for (SchemaElementComplex complex : complexProperty.getChildren())
{
if (!complex.isArray())
{
continue;
}
if (!complex.getName().equals(propertyNameAtomic))
{
continue;
}
// return the complex as a non-array since an index is provided
return new SchemaElementComplex(complex.getName(), complex.getNamespace(), complex.getAttributes(), complex.getChildren(), complex.getSimpleElements(), false, complex.getOptionalSimpleType(), complex.getOptionalSimpleTypeName());
}
return null;
}
/**
* Returns the index number for an indexed property expression.
* @param propertyName property expression
* @return index
*/
public static Integer getIndex(String propertyName)
{
int start = propertyName.indexOf('[');
int end = propertyName.indexOf(']');
String indexStr = propertyName.substring(start, end);
return Integer.parseInt(indexStr);
}
}