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// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.jtx.proxy;
import jodd.jtx.JtxTransactionMode;
import jodd.jtx.meta.ReadOnlyTransaction;
import jodd.jtx.meta.ReadWriteTransaction;
import jodd.jtx.meta.Transaction;
import jodd.jtx.meta.TransactionAnnotationValues;
import jodd.jtx.worker.LeanJtxWorker;
import jodd.proxetta.ProxettaException;
import jodd.util.StringUtil;
import jodd.util.annotation.AnnotationParser;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
/**
* Manager for {@link jodd.jtx.proxy.AnnotationTxAdvice}.
*/
public class AnnotationTxAdviceManager {
protected static final String JTXCTX_PATTERN_CLASS = "$class";
protected static final String JTXCTX_PATTERN_METHOD = "$method";
protected final Map txmap = new HashMap<>();
protected final LeanJtxWorker jtxWorker;
protected final JtxTransactionMode defaultTransactionMode;
protected final String scopePattern;
protected Class[] annotations;
protected AnnotationParser[] annotationParsers;
// ---------------------------------------------------------------- ctors
public AnnotationTxAdviceManager(final LeanJtxWorker jtxWorker) {
this(jtxWorker, JTXCTX_PATTERN_CLASS + '#' + JTXCTX_PATTERN_METHOD, null);
}
public AnnotationTxAdviceManager(final LeanJtxWorker jtxWorker, final String scopePattern) {
this(jtxWorker, scopePattern, null);
}
@SuppressWarnings( {"unchecked"})
public AnnotationTxAdviceManager(final LeanJtxWorker jtxWorker, final String scopePattern, final JtxTransactionMode defaultTxMode) {
this.jtxWorker = jtxWorker;
this.defaultTransactionMode = defaultTxMode == null ? JtxTransactionMode.PROPAGATION_SUPPORTS_READ_ONLY : defaultTxMode;
this.scopePattern = scopePattern;
registerAnnotations(new Class[] {
Transaction.class, ReadWriteTransaction.class, ReadOnlyTransaction.class
});
}
// ---------------------------------------------------------------- methods
/**
* Returns tx worker.
*/
public LeanJtxWorker getJtxWorker() {
return jtxWorker;
}
/**
* Returns default transaction mode.
*/
public JtxTransactionMode getDefaultTransactionMode() {
return defaultTransactionMode;
}
/**
* Resolves tx scope from scope pattern.
*/
public String resolveScope(final Class type, final String methodName) {
if (scopePattern == null) {
return null;
}
String ctx = scopePattern;
ctx = StringUtil.replace(ctx, JTXCTX_PATTERN_CLASS, type.getName());
ctx = StringUtil.replace(ctx, JTXCTX_PATTERN_METHOD, methodName);
return ctx;
}
/**
* Reads transaction mode from method annotation. Annotations are cached for better performances.
* @param type target class
* @param methodName target method name over which the transaction should be wrapped
* @param methodArgTypes types of arguments, used to find the method
* @param unique unique method fingerprint that contains return and arguments type information
*/
public synchronized JtxTransactionMode getTxMode(final Class type, final String methodName, final Class[] methodArgTypes, final String unique) {
String signature = type.getName() + '#' + methodName + '%' + unique;
JtxTransactionMode txMode = txmap.get(signature);
if (txMode == null) {
if (!txmap.containsKey(signature)) {
final Method m;
try {
m = type.getMethod(methodName, methodArgTypes);
} catch (NoSuchMethodException nsmex) {
throw new ProxettaException(nsmex);
}
final TransactionAnnotationValues txAnn = readTransactionAnnotation(m);
if (txAnn != null) {
txMode = new JtxTransactionMode(
txAnn.propagation(),
txAnn.isolation(),
txAnn.readOnly(),
txAnn.timeout()
);
} else {
txMode = defaultTransactionMode;
}
txmap.put(signature, txMode);
}
}
return txMode;
}
// ---------------------------------------------------------------- tx annotations
/**
* Returns current TX annotations.
*/
public Class[] getAnnotations() {
return annotations;
}
/**
* Registers new TX annotations.
*/
@SuppressWarnings( {"unchecked"})
public void registerAnnotations(final Class[] annotations) {
this.annotations = annotations;
this.annotationParsers = new AnnotationParser[annotations.length];
for (int i = 0; i < annotations.length; i++) {
annotationParsers[i] = TransactionAnnotationValues.parserFor(annotations[i]);
}
}
/**
* Finds TX annotation.
*/
protected TransactionAnnotationValues readTransactionAnnotation(final Method method) {
for (AnnotationParser annotationParser : annotationParsers) {
TransactionAnnotationValues tad = TransactionAnnotationValues.of(annotationParser, method);
if (tad != null) {
return tad;
}
}
return null;
}
}
