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| package org.jboss.cache.loader; |
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| import org.apache.commons.logging.Log; |
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| import org.apache.commons.logging.LogFactory; |
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| import org.jboss.cache.Fqn; |
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| import org.jboss.cache.Modification; |
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| import java.io.ObjectInputStream; |
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| import java.io.ObjectOutputStream; |
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| import java.util.HashMap; |
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| import java.util.List; |
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| import java.util.Map; |
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| import java.util.Set; |
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| public abstract class DelegatingCacheLoader extends AbstractCacheLoader |
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| { |
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| Log log = LogFactory.getLog(getClass()); |
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| HashMap<Object, List<Modification>> transactions = new HashMap<Object, List<Modification>>(); |
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| public static final int delegateGetChildrenNames = 1; |
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| public static final int delegateGetKey = 2; |
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| public static final int delegateGet = 3; |
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| public static final int delegateExists = 4; |
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| public static final int delegatePutKeyVal = 5; |
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| public static final int delegatePut = 6; |
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| public static final int delegateRemoveKey = 7; |
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| public static final int delegateRemove = 8; |
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| public static final int delegateRemoveData = 9; |
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| public static final int delegateLoadEntireState = 10; |
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| public static final int delegateStoreEntireState = 11; |
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| public static final int putList = 12; |
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2153
| public Set<String> getChildrenNames(Fqn fqn) throws Exception
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| { |
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| Set<String> retval = delegateGetChildrenNames(fqn);
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| return retval == null ? null : (retval.size() == 0 ? null : retval);
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| } |
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| public Map get(Fqn name) throws Exception
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| { |
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| return delegateGet(name);
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| } |
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| public boolean exists(Fqn name) throws Exception
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| { |
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| return delegateExists(name);
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| } |
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| public Object put(Fqn name, Object key, Object value) throws Exception
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| { |
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| return delegatePut(name, key, value);
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| } |
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| public void put(Fqn name, Map attributes) throws Exception
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| { |
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| delegatePut(name, attributes);
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| } |
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| public void put(Fqn fqn, Map attributes, boolean erase) throws Exception
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| { |
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| if (erase)
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| { |
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| removeData(fqn);
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| } |
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| put(fqn, attributes);
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| } |
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| public Object remove(Fqn name, Object key) throws Exception
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| { |
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| return delegateRemove(name, key);
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| } |
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| public void remove(Fqn name) throws Exception
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| { |
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| delegateRemove(name);
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| } |
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| public void removeData(Fqn name) throws Exception
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| { |
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| delegateRemoveData(name);
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| } |
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| public void prepare(Object tx, List<Modification> modifications, boolean one_phase) throws Exception
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| { |
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| if (one_phase)
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| { |
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| put(modifications);
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| } |
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| else |
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| { |
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| transactions.put(tx, modifications);
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| } |
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| } |
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| public void commit(Object tx) throws Exception
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| { |
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| List modifications = transactions.get(tx);
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| if (modifications == null)
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| { |
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| throw new Exception("transaction " + tx + " not found in transaction table");
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| } |
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| put(modifications);
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| } |
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| public void rollback(Object tx)
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| { |
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| transactions.remove(tx);
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| } |
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| public void loadEntireState(ObjectOutputStream os) throws Exception
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| { |
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| delegateLoadEntireState(os);
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| } |
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| public void loadState(Fqn subtree, ObjectOutputStream os) throws Exception
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| { |
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| delegateLoadState(subtree, os);
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| } |
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| public void storeEntireState(ObjectInputStream is) throws Exception
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| { |
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| delegateStoreEntireState(is);
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| } |
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| public void storeState(Fqn subtree, ObjectInputStream is) throws Exception
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| { |
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| delegateStoreState(subtree, is);
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| } |
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| public void create() throws Exception
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| { |
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| } |
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| public void start() throws Exception
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| { |
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| } |
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| public void stop()
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| { |
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| } |
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| public void destroy()
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| { |
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| } |
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| protected abstract Set delegateGetChildrenNames(Fqn fqn) throws Exception; |
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| protected abstract Map delegateGet(Fqn name) throws Exception; |
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| protected abstract boolean delegateExists(Fqn name) throws Exception; |
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| protected abstract Object delegatePut(Fqn name, Object key, Object value) throws Exception; |
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| protected abstract void delegatePut(Fqn name, Map attributes) throws Exception; |
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| protected abstract Object delegateRemove(Fqn name, Object key) throws Exception; |
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| protected abstract void delegateRemove(Fqn name) throws Exception; |
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| protected abstract void delegateRemoveData(Fqn name) throws Exception; |
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| protected abstract void delegateLoadEntireState(ObjectOutputStream os) throws Exception; |
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| protected abstract void delegateLoadState(Fqn subtree, ObjectOutputStream os) throws Exception; |
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| protected abstract void delegateStoreEntireState(ObjectInputStream is) throws Exception; |
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| protected abstract void delegateStoreState(Fqn subtree, ObjectInputStream is) throws Exception; |
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| } |