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package org.mule.transaction; |
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import org.mule.api.MuleContext; |
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import org.mule.api.transaction.TransactionException; |
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import org.mule.config.i18n.CoreMessages; |
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import java.lang.reflect.Field; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.Map; |
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import javax.transaction.Status; |
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import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicBoolean; |
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public abstract class AbstractSingleResourceTransaction extends AbstractTransaction |
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{ |
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34 | 0 | protected static Map<Integer, String> txStatusMappings = new HashMap<Integer, String>(10); |
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protected volatile Object key; |
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protected volatile Object resource; |
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39 | 0 | protected final AtomicBoolean started = new AtomicBoolean(false); |
40 | 0 | protected final AtomicBoolean committed = new AtomicBoolean(false); |
41 | 0 | protected final AtomicBoolean rolledBack = new AtomicBoolean(false); |
42 | 0 | protected final AtomicBoolean rollbackOnly = new AtomicBoolean(false); |
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static |
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{ |
46 | 0 | Field[] fields = Status.class.getFields(); |
47 | 0 | for (Field field : fields) |
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{ |
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try |
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{ |
51 | 0 | txStatusMappings.put(field.getInt(Status.class), field.getName()); |
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} |
53 | 0 | catch (IllegalAccessException e) |
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{ |
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56 | 0 | } |
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} |
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59 | 0 | txStatusMappings = Collections.unmodifiableMap(txStatusMappings); |
60 | 0 | } |
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protected AbstractSingleResourceTransaction(MuleContext muleContext) |
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{ |
64 | 0 | super(muleContext); |
65 | 0 | } |
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public void begin() throws TransactionException |
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{ |
69 | 0 | super.begin(); |
70 | 0 | started.compareAndSet(false, true); |
71 | 0 | } |
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public void commit() throws TransactionException |
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{ |
75 | 0 | super.commit(); |
76 | 0 | committed.compareAndSet(false, true); |
77 | 0 | } |
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public void rollback() throws TransactionException |
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{ |
81 | 0 | super.rollback(); |
82 | 0 | rolledBack.compareAndSet(false, true); |
83 | 0 | } |
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public int getStatus() throws TransactionStatusException |
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{ |
87 | 0 | if (rolledBack.get()) |
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{ |
89 | 0 | return STATUS_ROLLEDBACK; |
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} |
91 | 0 | if (committed.get()) |
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{ |
93 | 0 | return STATUS_COMMITTED; |
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} |
95 | 0 | if (rollbackOnly.get()) |
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{ |
97 | 0 | return STATUS_MARKED_ROLLBACK; |
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} |
99 | 0 | if (started.get()) |
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{ |
101 | 0 | return STATUS_ACTIVE; |
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} |
103 | 0 | return STATUS_NO_TRANSACTION; |
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} |
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public Object getResource(Object key) |
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{ |
108 | 0 | return key != null && this.key == key ? this.resource : null; |
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} |
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public boolean hasResource(Object key) |
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{ |
113 | 0 | return key != null && this.key == key; |
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} |
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public void bindResource(Object key, Object resource) throws TransactionException |
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{ |
118 | 0 | if (key == null) |
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{ |
120 | 0 | throw new IllegalTransactionStateException(CoreMessages.transactionCannotBindToNullKey()); |
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} |
122 | 0 | if (resource == null) |
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{ |
124 | 0 | throw new IllegalTransactionStateException(CoreMessages.transactionCannotBindNullResource()); |
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} |
126 | 0 | if (this.key != null) |
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{ |
128 | 0 | throw new IllegalTransactionStateException(CoreMessages.transactionSingleResourceOnly()); |
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} |
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131 | 0 | if (logger.isDebugEnabled()) |
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{ |
133 | 0 | logger.debug("Binding " + resource + " to " + key); |
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} |
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136 | 0 | this.key = key; |
137 | 0 | this.resource = resource; |
138 | 0 | } |
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public void setRollbackOnly() |
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{ |
142 | 0 | rollbackOnly.set(true); |
143 | 0 | } |
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@Override |
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public String toString() |
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{ |
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int status; |
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try |
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{ |
151 | 0 | status = getStatus(); |
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} |
153 | 0 | catch (TransactionException e) |
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{ |
155 | 0 | status = -1; |
156 | 0 | } |
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160 | 0 | String statusName = txStatusMappings.get(status); |
161 | 0 | if (statusName == null) |
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{ |
163 | 0 | statusName = "*undefined*"; |
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} |
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166 | 0 | return new StringBuilder().append(getClass().getName()) |
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.append('@').append(id) |
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.append("[status=").append(statusName) |
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.append(", key=").append(key) |
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.append(", resource=").append(resource) |
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.append("]").toString(); |
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} |
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} |