Package org.vast.data

Class DataBlockProxy

java.lang.Object

org.vast.data.DataBlockProxy

All Implemented Interfaces:

InvocationHandler, IDataAccessor

public class DataBlockProxy
extends Object
implements IDataAccessor, InvocationHandler

This class dynamically generates an accessor with Java Dynamic Proxy Classes using a data component schema and an interface with annotations that maps get/set methods to component paths.

The SweComponent annotation must be used. When omitted, the generator will try to infer the name of the component from the get/set method name and look for a corresponding component at the root of the record.

The following data types are supported in get/set methods: - All primitive types - java.time.Instant - java.lang.Date - JTS geometries - SWE vector, quaternion, matrix, etc. - primitive arrays?

TODO more efficient implementation based on generated methods compiled in memory with Janino or equivalent.

Since:

Jan 20, 2025

Nested Class Summary

Nested classes/interfaces inherited from interface org.vast.data.IDataAccessor

IDataAccessor.SweMapping

Method Summary

Modifier and Type	Method	Description
protected DataArray	assertDataArray(Method m, DataComponent comp)
protected Instant	convertToInstant(DataBlock data)
protected Collection<IDataAccessor>	createCollection(Class<IDataAccessor> clazz, DataArray array)
protected IDataAccessor	createElementProxy(Class<IDataAccessor> clazz, DataComponent arrayElt)
protected DataComponent	findComponentData(Method m)
static <T extends IDataAccessor> T	generate(DataComponent recordSchema, Class<T> targetInterface)
Object	invoke(Object proxy, Method method, Object[] args)
protected boolean	isAddMethod(Method m)
protected boolean	isGetMethod(Method m)
protected boolean	isSetMethod(Method m)
protected boolean	isSetNumMethod(Method m)
protected void	setFromInstant(DataBlock data, Instant ts)
String	toString()
void	wrap(DataBlock db)

Methods inherited from class java.lang.Object

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

Method Details

generate

public static <T extends IDataAccessor> T generate(DataComponent recordSchema,
 Class<T> targetInterface)

invoke

public Object invoke(Object proxy,
 Method method,
 Object[] args)

Specified by:

invoke in interface InvocationHandler

findComponentData

protected DataComponent findComponentData(Method m)

isGetMethod

protected boolean isGetMethod(Method m)

isSetMethod

protected boolean isSetMethod(Method m)

isAddMethod

protected boolean isAddMethod(Method m)

isSetNumMethod

protected boolean isSetNumMethod(Method m)

convertToInstant

protected Instant convertToInstant(DataBlock data)

setFromInstant

protected void setFromInstant(DataBlock data,
 Instant ts)

createElementProxy

protected IDataAccessor createElementProxy(Class<IDataAccessor> clazz,
 DataComponent arrayElt)

createCollection

protected Collection<IDataAccessor> createCollection(Class<IDataAccessor> clazz,
 DataArray array)

assertDataArray

protected DataArray assertDataArray(Method m,
 DataComponent comp)

wrap

public void wrap(DataBlock db)

Specified by:

wrap in interface IDataAccessor

toString

public String toString()

Overrides:

toString in class Object