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package org.mule.transport.jdbc; |
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|
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import org.mule.api.MuleException; |
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import org.mule.api.endpoint.ImmutableEndpoint; |
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import org.mule.api.endpoint.InboundEndpoint; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.api.service.Service; |
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import org.mule.api.transaction.Transaction; |
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import org.mule.api.transaction.TransactionException; |
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import org.mule.api.transport.MessageReceiver; |
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import org.mule.config.ExceptionHelper; |
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import org.mule.config.i18n.MessageFactory; |
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import org.mule.transaction.TransactionCoordination; |
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import org.mule.transport.AbstractConnector; |
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import org.mule.util.expression.ExpressionEvaluatorManager; |
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|
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import java.sql.Connection; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.regex.Matcher; |
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import java.util.regex.Pattern; |
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|
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import javax.sql.DataSource; |
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|
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import org.apache.commons.dbutils.QueryRunner; |
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import org.apache.commons.dbutils.ResultSetHandler; |
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import org.apache.commons.dbutils.handlers.MapListHandler; |
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|
39 | 62 | public class JdbcConnector extends AbstractConnector |
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{ |
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public static final String JDBC = "jdbc"; |
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|
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|
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|
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public static final String PROPERTY_POLLING_FREQUENCY = "pollingFrequency"; |
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public static final long DEFAULT_POLLING_FREQUENCY = 1000; |
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|
48 | 2 | private static final Pattern STATEMENT_ARGS = Pattern.compile("\\$\\{[^\\}]*\\}"); |
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|
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|
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static |
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{ |
53 | 2 | ExceptionHelper.registerExceptionReader(new SQLExceptionReader()); |
54 | 2 | } |
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|
56 | 62 | protected long pollingFrequency = 0; |
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protected Map queries; |
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|
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private DataSource dataSource; |
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private ResultSetHandler resultSetHandler; |
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private QueryRunner queryRunner; |
62 | 62 | protected boolean transactionPerMessage = true; |
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|
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protected void doInitialise() throws InitialisationException |
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{ |
66 | 62 | createMultipleTransactedReceivers = false; |
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|
68 | 62 | if (dataSource == null) |
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{ |
70 | 0 | throw new InitialisationException(MessageFactory.createStaticMessage("Missing data source"), this); |
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} |
72 | 62 | if (resultSetHandler == null) |
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{ |
74 | 60 | resultSetHandler = new MapListHandler(); |
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} |
76 | 62 | if (queryRunner == null) |
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{ |
78 | 60 | queryRunner = new QueryRunner(); |
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} |
80 | 62 | } |
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|
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public MessageReceiver createReceiver(Service service, InboundEndpoint endpoint) throws Exception |
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{ |
84 | 12 | Map props = endpoint.getProperties(); |
85 | 12 | if (props != null) |
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{ |
87 | 12 | String tempPolling = (String) props.get(PROPERTY_POLLING_FREQUENCY); |
88 | 12 | if (tempPolling != null) |
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{ |
90 | 0 | pollingFrequency = Long.parseLong(tempPolling); |
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} |
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} |
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|
94 | 12 | if (pollingFrequency <= 0) |
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{ |
96 | 0 | pollingFrequency = DEFAULT_POLLING_FREQUENCY; |
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} |
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|
99 | 12 | String[] params = getReadAndAckStatements(endpoint); |
100 | 12 | return getServiceDescriptor().createMessageReceiver(this, service, endpoint, params); |
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} |
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|
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public String[] getReadAndAckStatements(ImmutableEndpoint endpoint) |
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{ |
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String str; |
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|
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|
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String readStmt; |
109 | 36 | if ((str = (String)endpoint.getProperty("sql")) != null) |
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{ |
111 | 6 | readStmt = str; |
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} |
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else |
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{ |
115 | 30 | readStmt = endpoint.getEndpointURI().getAddress(); |
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} |
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|
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|
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String ackStmt; |
120 | 36 | if ((str = (String)endpoint.getProperty("ack")) != null) |
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{ |
122 | 0 | ackStmt = str; |
123 | 0 | if ((str = getQuery(endpoint, ackStmt)) != null) |
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{ |
125 | 0 | ackStmt = str; |
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} |
127 | 0 | ackStmt = ackStmt.trim(); |
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} |
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else |
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{ |
131 | 36 | ackStmt = readStmt + ".ack"; |
132 | 36 | if ((str = getQuery(endpoint, ackStmt)) != null) |
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{ |
134 | 24 | ackStmt = str.trim(); |
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} |
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else |
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{ |
138 | 12 | ackStmt = null; |
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} |
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} |
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|
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|
143 | 36 | if ((str = getQuery(endpoint, readStmt)) != null) |
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{ |
145 | 28 | readStmt = str; |
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} |
147 | 36 | if (readStmt == null) |
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{ |
149 | 0 | throw new IllegalArgumentException("Read statement should not be null"); |
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} |
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else |
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{ |
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|
154 | 36 | readStmt = readStmt.trim(); |
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} |
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|
157 | 36 | if (!"select".equalsIgnoreCase(readStmt.substring(0, 6)) && !"call".equalsIgnoreCase(readStmt.substring(0, 4))) |
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{ |
159 | 0 | throw new IllegalArgumentException("Read statement should be a select sql statement or a stored procedure"); |
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} |
161 | 36 | if (ackStmt != null) |
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{ |
163 | 24 | if (!"insert".equalsIgnoreCase(ackStmt.substring(0, 6)) |
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&& !"update".equalsIgnoreCase(ackStmt.substring(0, 6)) |
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&& !"delete".equalsIgnoreCase(ackStmt.substring(0, 6))) |
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{ |
167 | 0 | throw new IllegalArgumentException( |
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"Ack statement should be an insert / update / delete sql statement"); |
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} |
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} |
171 | 36 | return new String[]{readStmt, ackStmt}; |
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} |
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|
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public String getQuery(ImmutableEndpoint endpoint, String stmt) |
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{ |
176 | 100 | Object query = null; |
177 | 100 | if (endpoint != null && endpoint.getProperties() != null) |
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{ |
179 | 100 | Object queries = endpoint.getProperties().get("queries"); |
180 | 100 | if (queries instanceof Map) |
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{ |
182 | 10 | query = ((Map)queries).get(stmt); |
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} |
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} |
185 | 100 | if (query == null) |
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{ |
187 | 94 | if (this.queries != null) |
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{ |
189 | 86 | query = this.queries.get(stmt); |
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} |
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} |
192 | 100 | return query == null ? null : query.toString(); |
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} |
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|
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public Connection getConnection() throws Exception |
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{ |
197 | 140 | Transaction tx = TransactionCoordination.getInstance().getTransaction(); |
198 | 140 | if (tx != null) |
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{ |
200 | 8 | if (tx.hasResource(dataSource)) |
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{ |
202 | 0 | logger.debug("Retrieving connection from current transaction"); |
203 | 0 | return (Connection)tx.getResource(dataSource); |
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} |
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} |
206 | 140 | logger.debug("Retrieving new connection from data source"); |
207 | 140 | Connection con = dataSource.getConnection(); |
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|
209 | 140 | if (tx != null) |
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{ |
211 | 8 | logger.debug("Binding connection to current transaction"); |
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try |
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{ |
214 | 8 | tx.bindResource(dataSource, con); |
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} |
216 | 0 | catch (TransactionException e) |
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{ |
218 | 0 | JdbcUtils.close(con); |
219 | 0 | throw new RuntimeException("Could not bind connection to current transaction", e); |
220 | 8 | } |
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} |
222 | 140 | return con; |
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} |
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|
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public boolean isTransactionPerMessage() |
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{ |
227 | 0 | return transactionPerMessage; |
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} |
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|
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public void setTransactionPerMessage(boolean transactionPerMessage) |
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{ |
232 | 0 | this.transactionPerMessage = transactionPerMessage; |
233 | 0 | if (!transactionPerMessage) |
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{ |
235 | 0 | logger.warn("transactionPerMessage property is set to false so setting createMultipleTransactedReceivers " + |
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"to false also to prevent creation of multiple JdbcMessageReceivers"); |
237 | 0 | setCreateMultipleTransactedReceivers(transactionPerMessage); |
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} |
239 | 0 | } |
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|
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|
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|
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|
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|
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|
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|
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|
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|
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public String parseStatement(String stmt, List params) |
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{ |
251 | 80 | if (stmt == null) |
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{ |
253 | 12 | return stmt; |
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} |
255 | 68 | Matcher m = STATEMENT_ARGS.matcher(stmt); |
256 | 68 | StringBuffer sb = new StringBuffer(200); |
257 | 188 | while (m.find()) |
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{ |
259 | 120 | String key = m.group(); |
260 | 120 | m.appendReplacement(sb, "?"); |
261 | 120 | params.add(key); |
262 | 120 | } |
263 | 68 | m.appendTail(sb); |
264 | 68 | return sb.toString(); |
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} |
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|
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public Object[] getParams(ImmutableEndpoint endpoint, List paramNames, Object message, String query) |
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throws Exception |
269 | |
{ |
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|
271 | 50 | Object[] params = new Object[paramNames.size()]; |
272 | 130 | for (int i = 0; i < paramNames.size(); i++) |
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{ |
274 | 80 | String param = (String)paramNames.get(i); |
275 | 80 | String name = param.substring(2, param.length() - 1); |
276 | 80 | Object value = null; |
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|
278 | 80 | boolean foundValue = false; |
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|
280 | 80 | if (message != null && ExpressionEvaluatorManager.isValidExpression(name)) |
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{ |
282 | 18 | value = ExpressionEvaluatorManager.evaluate(name, message); |
283 | 18 | foundValue = value!=null; |
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} |
285 | 80 | if (!foundValue) |
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{ |
287 | 62 | value = endpoint.getProperty(name); |
288 | |
} |
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|
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|
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|
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|
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|
298 | 80 | params[i] = value; |
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} |
300 | 50 | return params; |
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} |
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|
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protected void doDispose() |
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{ |
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|
306 | 78 | } |
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|
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protected void doConnect() throws Exception |
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{ |
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|
311 | 62 | } |
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|
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protected void doDisconnect() throws Exception |
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{ |
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|
316 | 62 | } |
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|
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protected void doStart() throws MuleException |
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{ |
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|
321 | 60 | } |
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|
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protected void doStop() throws MuleException |
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{ |
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|
326 | 60 | } |
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|
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|
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|
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|
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|
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public String getProtocol() |
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{ |
334 | 160 | return JDBC; |
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} |
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|
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public DataSource getDataSource() |
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{ |
339 | 6 | return dataSource; |
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} |
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|
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public void setDataSource(DataSource dataSource) |
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{ |
344 | 62 | this.dataSource = dataSource; |
345 | 62 | } |
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|
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public ResultSetHandler getResultSetHandler() |
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{ |
349 | 26 | return resultSetHandler; |
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} |
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|
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public void setResultSetHandler(ResultSetHandler resultSetHandler) |
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{ |
354 | 2 | this.resultSetHandler = resultSetHandler; |
355 | 2 | } |
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|
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public QueryRunner getQueryRunner() |
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{ |
359 | 108 | return queryRunner; |
360 | |
} |
361 | |
|
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public void setQueryRunner(QueryRunner queryRunner) |
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{ |
364 | 2 | this.queryRunner = queryRunner; |
365 | 2 | } |
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|
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|
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|
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|
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public long getPollingFrequency() |
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{ |
372 | 12 | return pollingFrequency; |
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} |
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|
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|
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|
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|
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public void setPollingFrequency(long pollingFrequency) |
379 | |
{ |
380 | 36 | this.pollingFrequency = pollingFrequency; |
381 | 36 | } |
382 | |
|
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|
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|
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|
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public Map getQueries() |
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{ |
388 | 8 | return queries; |
389 | |
} |
390 | |
|
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|
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|
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|
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public void setQueries(Map queries) |
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{ |
396 | 26 | this.queries = queries; |
397 | 26 | } |
398 | |
} |