scriptella.spi

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Java Source Code / Java Documentation » Scripting » scriptella » scriptella.spi

scriptella.spi
Service Provider Interface classes. Service Provider Requirements Although Scriptella supports any JDBC Driver through JDBC Bridge, writing a custom Provider may be easier and more effective. The requirements for Service Provider are minimal: Provide a class implementing Scriptella Driver Interface. This class must have a public no-arg constructor. We recommend to use AbstractScriptellaDriver as a base. Create a subclass of Provider Exception. Override methods if necessary Driver Registration No special steps are required to register Scriptella Provider. Simply specify driver class name in a driver attribute of <connection> element. Examples: `<connection driver="provider.class.name" url="provider:url"/>` You may also specify a driver's classpath. Classpath URIs are resolved relative to an ETL file: `<connection driver="provider.class.name" url="provider:url" classpath="driver.jar;lib/driver-addons.jar"/>` In this case the driver is loaded using a separate classloader Driver Alias Putting a driver into `scriptella.driver.SHORT_NAME` package and specifying "Driver" as a class name automatically allows referencing the driver by a SHORT_NAME alias. Example: `<connection driver="SHORT_NAME">` loads `scriptella.driver.SHORT_NAME.Driver` class. Additional Recommendations `url` is not a required attribute for custom providers, nevertheless it may make sense to specify URL protocol for your driver. If your solution performs scripts compilation and this procedure is expensive, use caching based on Resource indentities as described in javadoc for Connection. Pack your provider as a JAR file setting specification title, version and other attributes in manifest. Adding a simple readme file inside a JAR may help users to quickly get how to use it. Scriptella built-in drivers can be used as a reference implementation to create a new driver.
Java Source File Name	Type	Comment
AbstractConnection.java	Class	A base class for connections.
AbstractScriptellaDriver.java	Class	An abstract base for Scriptella drivers.
Connection.java	Interface	Represents a connection to the system provided by ScriptellaDriver .
ConnectionParameters.java	Class	Represents connection parameters.
ConnectionParametersTest.java	Class	Tests for ConnectionParameters .
DialectIdentifier.java	Class	Represents vendor dialect information.
DriverContext.java	Interface	Global ETL Context available to drivers.
IndexedQueryCallback.java	Class	Query callback implementation which supports indexing.
MockConnectionParameters.java	Class	Mock implementation of scriptella.spi.ConnectionParameters .
MockDriverContext.java	Class	Mock implementation of drivers context suitable for typical cases.
MockParametersCallbacks.java	Class	Set of common implementations for testing.
ParametersCallback.java	Interface	Callback interface to obtain parameter values.
ProviderException.java	Class	Thrown by connection provider to indicate any kind of failure.
QueryCallback.java	Interface	Callback interface for query result set iteration.
Resource.java	Interface	Represents reference to a text resource capable of creating new readers.
ScriptellaDriver.java	Interface	Service Provider Interface for integrating third-party systems with Scriptella.

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scriptella.spi

Service Provider Requirements

Driver Registration

Driver Alias

Additional Recommendations