package org.googlecode.perftrace.aopmatcher.support;
import java.io.Serializable;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import org.googlecode.perftrace.javassist.CtClass;
import org.googlecode.perftrace.javassist.CtMethod;
import org.googlecode.perftrace.util.ObjectUtils;
/**
* Pointcut bean for simple method name matches, as alternative to regexp patterns.
* Does not handle overloaded methods: all methods *with a given name will be eligible.
*/
@SuppressWarnings("serial")
public class NameMatchMethodMatcher extends StaticMethodMatcher implements Serializable {
private List<String> mappedNames = new LinkedList<String>();
/**
* Convenience method when we have only a single method name to match.
* Use either this method or {@code setMappedNames}, not both.
* @see #setMappedNames
*/
public void setMappedName(String mappedName) {
setMappedNames(new String[] {mappedName});
}
/**
* Set the method names defining methods to match.
* Matching will be the union of all these; if any match,
* the pointcut matches.
*/
public void setMappedNames(String[] mappedNames) {
this.mappedNames = new LinkedList<String>();
if (mappedNames != null) {
this.mappedNames.addAll(Arrays.asList(mappedNames));
}
}
/**
* Add another eligible method name, in addition to those already named.
* Like the set methods, this method is for use when configuring proxies,
* before a proxy is used.
* <p><b>NB:</b> This method does not work after the proxy is in
* use, as advice chains will be cached.
* @param name name of the additional method that will match
* @return this pointcut to allow for multiple additions in one line
*/
public NameMatchMethodMatcher addMethodName(String name) {
this.mappedNames.add(name);
return this;
}
public boolean matches(CtMethod method, CtClass targetClass) {
for (String mappedName : this.mappedNames) {
if (mappedName.equals(method.getName()) || isMatch(method.getName(), mappedName)) {
return true;
}
}
return false;
}
/**
* Return if the given method name matches the mapped name.
* <p>The default implementation checks for "xxx*", "*xxx" and "*xxx*" matches,
* as well as direct equality. Can be overridden in subclasses.
* @param methodName the method name of the class
* @param mappedName the name in the descriptor
* @return if the names match
* @see org.springframework.util.PatternMatchUtils#simpleMatch(String, String)
*/
protected boolean isMatch(String methodName, String mappedName) {
return PatternMatchUtils.simpleMatch(mappedName, methodName);
}
@Override
public boolean equals(Object other) {
return (this == other || (other instanceof NameMatchMethodMatcher &&
ObjectUtils.nullSafeEquals(this.mappedNames, ((NameMatchMethodMatcher) other).mappedNames)));
}
@Override
public int hashCode() {
return (this.mappedNames != null ? this.mappedNames.hashCode() : 0);
}
}