@Test
public void test6() {
ElementSelector p = new ElementSelector("//a//b");
assertEquals(2, p.size());
assertEquals("a", p.get(0));
assertEquals("b", p.get(1));
}
@Test
public void testSuffix() {
ElementSelector p = new ElementSelector("a/");
assertEquals(1, p.size());
assertEquals("a", p.peekLast());
assertEquals("a", p.get(0));
}
@Test
public void test4() {
ElementSelector p = new ElementSelector("/a123/b1234/cvvsdf");
assertEquals(3, p.size());
assertEquals("a123", p.get(0));
assertEquals("b1234", p.get(1));
assertEquals("cvvsdf", p.get(2));
}
@Test
public void test2() {
ElementSelector p = new ElementSelector("a/b");
assertEquals(2, p.size());
assertEquals("b", p.peekLast());
assertEquals("a", p.get(0));
assertEquals("b", p.get(1));
}
/** 解析<code>TypeFilter</code>s。 */
private void parseTypeFilters(
Element element,
ClassLoader classLoader,
List<TypeFilter> includes,
List<TypeFilter> excludes) {
ElementSelector includeSelector = and(sameNs(element), name("include-filter"));
ElementSelector excludeSelector = and(sameNs(element), name("exclude-filter"));
for (Element subElement : subElements(element)) {
if (includeSelector.accept(subElement)) {
TypeFilter filter = createTypeFilter(subElement, classLoader);
if (filter != null) {
includes.add(filter);
}
} else if (excludeSelector.accept(subElement)) {
TypeFilter filter = createTypeFilter(subElement, classLoader);
if (filter != null) {
excludes.add(filter);
}
}
}
}
@Override
protected void doParse(
Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
Map<String, ParsingModuleInfo> classes =
parseSpecificBeans(
element, parserContext, builder.getRawBeanDefinition(), and(beansNs(), name("bean")));
ElementSelector searchPackages = and(sameNs(element), name("search-packages"));
ElementSelector searchClasses = and(sameNs(element), name("search-classes"));
ModuleDefinitionScanner scanner = getScanner(parserContext);
for (Element subElement : subElements(element)) {
Pattern classNamePattern = null;
String typeName = null;
String moduleName = null;
String classResourceName = null;
if (searchPackages.accept(subElement)) {
String packageName =
assertNotNull(
normalizeClassName(subElement.getAttribute("packages")),
"no package name provided for search-packages");
classNamePattern = compileClassName(packageName, MATCH_PREFIX);
typeName =
assertNotNull(trimToNull(subElement.getAttribute("type")), "no type name provided");
classResourceName = classNameToPathName(packageName) + "/**/*.class";
log.trace("Searching in packages: {}, moduleType={}", packageName, typeName);
} else if (searchClasses.accept(subElement)) {
String className =
assertNotNull(
normalizeClassName(subElement.getAttribute("classes")),
"no class name provided for search-classes");
classNamePattern = compileClassName(className, MATCH_PREFIX);
typeName =
assertNotNull(trimToNull(subElement.getAttribute("type")), "no type name provided");
moduleName =
assertNotNull(trimToNull(subElement.getAttribute("name")), "no module name provided");
classResourceName = classNameToPathName(className);
if (classResourceName.endsWith("**")) {
classResourceName += "/*.class";
} else {
classResourceName += ".class";
}
log.trace(
"Searching for classes: {}, moduleType={}, moduleName={}",
new Object[] {className, typeName, moduleName});
}
boolean includeAbstractClasses =
"true".equalsIgnoreCase(trimToNull(subElement.getAttribute("includeAbstractClasses")));
if (classResourceName != null) {
// 处理所有的include/exclude filters
ClassLoader classLoader = scanner.getResourceLoader().getClassLoader();
List<TypeFilter> includes = createLinkedList();
List<TypeFilter> excludes = createLinkedList();
parseTypeFilters(subElement, classLoader, includes, excludes);
ModuleTypeFilter filter =
new ModuleTypeFilter(classes, classNamePattern, typeName, moduleName, includes);
// 事实上，只有一个顶级的include filter，其它的include filter被这一个moduleTypeFilter所调用。
scanner.addIncludeFilter(filter);
// Exclude filter比较简单，直接加到scanner中即可。
for (TypeFilter exclude : excludes) {
scanner.addExcludeFilter(exclude);
}
scanner.setBeanNameGenerator(filter);
scanner.setResourcePattern(classResourceName.replace('?', '*'));
scanner.setIncludeAbstractClasses(includeAbstractClasses);
scanner.setBeanDefinitionDefaults(getBeanDefinitionDefaults(subElement, parserContext));
int found = scanner.scan("");
log.debug("Found {} module classes with pattern: {}", found, classResourceName);
}
}
postProcessItems(element, parserContext, builder, classes, "search-packages or search-classes");
}
// test tail matching
@Test
public void testTailMatch() {
{
ElementPath p = new ElementPath("/a/b");
ElementSelector ruleElementSelector = new ElementSelector("*");
assertEquals(0, ruleElementSelector.getTailMatchLength(p));
}
{
ElementPath p = new ElementPath("/a");
ElementSelector ruleElementSelector = new ElementSelector("*/a");
assertEquals(1, ruleElementSelector.getTailMatchLength(p));
}
{
ElementPath p = new ElementPath("/A");
ElementSelector ruleElementSelector = new ElementSelector("*/a");
assertEquals(1, ruleElementSelector.getTailMatchLength(p));
}
{
ElementPath p = new ElementPath("/a");
ElementSelector ruleElementSelector = new ElementSelector("*/A");
assertEquals(1, ruleElementSelector.getTailMatchLength(p));
}
{
ElementPath p = new ElementPath("/a/b");
ElementSelector ruleElementSelector = new ElementSelector("*/b");
assertEquals(1, ruleElementSelector.getTailMatchLength(p));
}
{
ElementPath p = new ElementPath("/a/B");
ElementSelector ruleElementSelector = new ElementSelector("*/b");
assertEquals(1, ruleElementSelector.getTailMatchLength(p));
}
{
ElementPath p = new ElementPath("/a/b/c");
ElementSelector ruleElementSelector = new ElementSelector("*/b/c");
assertEquals(2, ruleElementSelector.getTailMatchLength(p));
}
}
@Test
public void test5() {
ElementSelector p = new ElementSelector("//a");
assertEquals(1, p.size());
assertEquals("a", p.get(0));
}
// test prefix matching
@Test
public void testPrefixMatch() {
{
ElementPath p = new ElementPath("/a/b");
ElementSelector ruleElementSelector = new ElementSelector("/x/*");
assertEquals(0, ruleElementSelector.getPrefixMatchLength(p));
}
{
ElementPath p = new ElementPath("/a");
ElementSelector ruleElementSelector = new ElementSelector("/x/*");
assertEquals(0, ruleElementSelector.getPrefixMatchLength(p));
}
{
ElementPath p = new ElementPath("/a/b");
ElementSelector ruleElementSelector = new ElementSelector("/a/*");
assertEquals(1, ruleElementSelector.getPrefixMatchLength(p));
}
{
ElementPath p = new ElementPath("/a/b");
ElementSelector ruleElementSelector = new ElementSelector("/A/*");
assertEquals(1, ruleElementSelector.getPrefixMatchLength(p));
}
{
ElementPath p = new ElementPath("/A/b");
ElementSelector ruleElementSelector = new ElementSelector("/a/*");
assertEquals(1, ruleElementSelector.getPrefixMatchLength(p));
}
{
ElementPath p = new ElementPath("/a/b");
ElementSelector ruleElementSelector = new ElementSelector("/a/b/*");
assertEquals(2, ruleElementSelector.getPrefixMatchLength(p));
}
{
ElementPath p = new ElementPath("/a/b");
ElementSelector ruleElementSelector = new ElementSelector("/*");
assertEquals(0, ruleElementSelector.getPrefixMatchLength(p));
}
}
