--- /dev/null 2017-01-27 21:23:58.368196991 -0800 +++ new/src/java.xml/share/classes/javax/xml/validation/package-info.java 2017-05-23 15:29:06.028878888 -0700 @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/** + *
+ * Provides an API for validation of XML documents. Validation is the + * process of verifying that an XML document is an instance of a specified XML + * schema. An XML schema defines the content model (also called a + * grammar or vocabulary) that its instance documents will + * represent. + * + *
+ * There are a number of popular technologies available for creating an XML schema. + * Some of the most popular ones include: + * + *
+ * While JAXP supports validation as a feature of an XML parser, represented by + * either a {@link javax.xml.parsers.SAXParser} or {@link javax.xml.parsers.DocumentBuilder} + * instance, the {@code Validation} API is preferred. + * + *
+ * The JAXP validation API decouples the validation of an instance document from + * the parsing of an XML document. This is advantageous for several reasons, + * some of which are: + * + *
+ * Usage example. The following example + * demonstrates validating an XML document with the Validation API + * (for readability, some exception handling is not shown): + * + *
+ * + * // parse an XML document into a DOM tree + * DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder(); + * Document document = parser.parse(new File("instance.xml")); + * + * // create a SchemaFactory capable of understanding WXS schemas + * SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); + * + * // load a WXS schema, represented by a Schema instance + * Source schemaFile = new StreamSource(new File("mySchema.xsd")); + * Schema schema = factory.newSchema(schemaFile); + * + * // create a Validator instance, which can be used to validate an instance document + * Validator validator = schema.newValidator(); + * + * // validate the DOM tree + * try { + * validator.validate(new DOMSource(document)); + * } catch (SAXException e) { + * // instance document is invalid! + * } + *+ *
+ * The JAXP parsing API has been integrated with the Validation API. Applications
+ * may create a {@link javax.xml.validation.Schema} with the validation API
+ * and associate it with a {@link javax.xml.parsers.DocumentBuilderFactory} or
+ * a {@link javax.xml.parsers.SAXParserFactory} instance by using the
+ * {@link javax.xml.parsers.DocumentBuilderFactory#setSchema(Schema)} and
+ * {@link javax.xml.parsers.SAXParserFactory#setSchema(Schema)} methods.
+ * You should not both set a schema and call setValidating(true)
+ * on a parser factory. The former technique will cause parsers to use the new
+ * validation API; the latter will cause parsers to use their own internal validation
+ * facilities. Turning on both of these options simultaneously will cause
+ * either redundant behavior or error conditions.
+ *
+ *
+ * @since 1.5
+ */
+
+package javax.xml.validation;