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‎README.txt

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<!--
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~ Copyright 2011 FuseSource
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~
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~ Licensed under the Apache License, Version 2.0 (the "License");
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~ you may not use this file except in compliance with the License.
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~ You may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing, software
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~ distributed under the License is distributed on an "AS IS" BASIS,
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~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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~ See the License for the specific language governing permissions and
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~ limitations under the License.
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-->
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DESCRIPTION
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===========
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This is the material accompanying the presentation of webinar part II - Transaction Management with Fuse ESB, Camel and Persistent EIPs.
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It covers the different demo made during the talk and is organized like that :
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aggregator = Camel route project to persist aggregate in H2 DB using JDBCAggregateRepository
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idempotent = Camel route using JPAIdempotentRepository to persist messages already processed
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dao = DAO layer to persist Incident record in H2 DB using OpenJPA
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dao-jta = Idem but configured to use JTA
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features = features to be deployed on Fuse ESB
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route-one-tx-manager = Camel routes using one Global Tx Manager (Aries Tx Manager on Fuse ESB)
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route-two-tx-manager = Camel routes using tewo separate Tx Managers (JMS and JDBC)
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H2 DATABASE
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===========
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1) Open a DOS/UNIX console in the folder persistence/database
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2) Download H2 Database (http://www.h2database.com/html/download.html) and install it
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3) Start H2 Server using the bat or shell script
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./h2.sh &
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The H2 server is started and to manage the databases from your web browser, simply click on the following url http://localhost:8082/
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4) Next create the report database
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In the login.jsp screen, select Generic (H2) - Server
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Add as settings name : Generic H2 (Server) - Webinar
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and modify the JDBC ur las such : jdbc:h2:tcp://localhost/~/reportdb
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Next click on "connect" and the screen to manage the reportdb appears
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5) Create Schema and Tables using the script located in the file camel-persistence-part2/datasource/src/config/hsqldb/reportdb-scripts.sql
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Execute the scripts 1), 2) and 3) defined in this file
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Check that the records are well created using the command : SELECT * FROM REPORT.T_INCIDENT;
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FUSE ESB INSTALLATION
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=====================
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1) Download and install the Fuse ESB server : http://repo.fusesource.com/nexus/content/repositories/releases/org/apache/servicemix/apache-servicemix/4.4.1-fuse-01-06/
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2) Start Fuse ESB server /bin/karaf.sh
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Camel Route with 2 Tx Managers
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==============================
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This example is comprised of the following projects: datasource, dao, route-two-tx-manager.
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Ensure you have installed the H2 database and the REPORT schema as per the steps above.
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To install and test, perform the following steps:
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1) cd camel-persistence-part2/
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2) Run: mvn clean install
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3) ServiceMix offers a simple JNDI implementation for OSGi, but for this example we are interested in leveraging the more sophisticated Aries JNDI
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lookup handler. Thus, we need to remove the ServiceMix Naming bundle as it will conflict with the Aries JNDI implementation. Run the following command:
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list | grep -i naming | grep -i servicemix
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Make note of the bundle id (the number inside the leftmost square brackets).
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Run the following command:
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uninstall <bundle-id>
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Restart Karaf (use Ctrl-D to stop it).
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3) Install the relevant bundles by executing the following command in the FUSE ESB console:
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features:addurl mvn:com.fusesource.examples.camel-persistence-part2/persistence/1.0/xml/features
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features:install reportincident-jpa-two
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N.B.: You may safely disregard the openjpa.Runtime Warning if it appears.
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4) Execute the "list" command in the ESB shell and check that the following bundles are Active:
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[...] [Active ] [Created ] [ ] [ 60] FuseSource :: Examples :: Fuse ESB & Persistence :: Datasource (1.0)
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[...] [Active ] [ ] [Started] [ 60] FuseSource :: Examples :: Fuse ESB & Persistence :: DAO (1.0)
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[...] [Active ] [ ] [Started] [ 60] FuseSource :: Examples :: Fuse ESB & Persistence :: Camel - 2 Tx Manager (1.0)
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5) Start H2 console and connect to the DB using the following parameters
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Driver class = org.h2.Driver
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JDBC URL : jdbc:h2:tcp://localhost/~/reportdb
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User name : sa
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Password :
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Run the following SQL sentence to ensure that the REPORT.T_INCIDENT is empty: SELECT * FROM REPORT.T_INCIDENT;
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6) Launch JConsole (inside $JAVA_HOME/bin) and connect to the local process named "org.apache.karaf.main.Main". Switch to the MBeans tab at the top.
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On the left pane, expand the org.apache.activemq domain, then navigate to: default > Queue. You will see the incident and rollback queues.
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The registerCall queue will appear when it is first used. For these queues, you will be interested in tracking the EnqueueCount attribute.
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7) Copy the following files and notice the effect in the registerCall queue and the REPORT.T_INCIDENT table:
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- camel-persistence-part2/data/csv-one-record-allok.txt to $SERVICEMIX_HOME/datainsert --> record written in table, new message on registerCall queue
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- camel-persistence-part2/data/csv-one-record-failjms-dbok.txt to $SERVICEMIX_HOME/datainsert --> record written in table, NO new message on registerCall queue
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- camel-persistence-part2/data/csv-one-record-jmsok-faildb.txt to $SERVICEMIX_HOME/datainsert --> NO record written in table, new message on registerCall queue
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- camel-persistence-part2/data/csv-one-record-failjms-faildb.txt to $SERVICEMIX_HOME/datainsert --> NO record written in table, NO new message on registerCall queue
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Camel route with 1 Global Tx Manager
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====================================
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This example is comprised of the following projects: datasource, dao-jta, route-one-tx-manager. (NOTICE bundle names: dao-*jta* and route-*one*-tx-manager)
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Ensure you have installed the H2 database and the REPORT schema as per the steps above.
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To install and test, assuming that you have previously run the "Camel Route with 2 Tx Managers" example above:
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1) First uninstall the reportincident-jpa-two feature:
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features:uninstall reportincident-jpa-two
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2) Install the reportincident-jpa-one feature:
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features:install reportincident-jpa-one
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3) Execute the "list" command in the ESB shell and check that the following bundles are Active:
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[...] [Active ] [Created ] [ ] [ 60] FuseSource :: Examples :: Fuse ESB & Persistence :: Datasource (1.0)
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[...] [Active ] [ ] [ ] [ 60] FuseSource :: Examples :: Fuse ESB & Persistence :: DAO - JTA (1.0)
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[...] [Active ] [ ] [Started] [ 60] FuseSource :: Examples :: Fuse ESB & Persistence :: Camel - 1 Tx Manager (1.0)
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4) Copy the following files and notice the new behaviours in the second and third cases, in terms of the registerCall queue and the REPORT.T_INCIDENT table:
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- camel-persistence-part2/data/csv-one-record-allok.txt to $SERVICEMIX_HOME/datainsert --> record written in table, new message on registerCall queue
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- camel-persistence-part2/data/csv-one-record-failjms-dbok.txt to $SERVICEMIX_HOME/datainsert --> NO record written in table, NO new message on registerCall queue
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- camel-persistence-part2/data/csv-one-record-jmsok-faildb.txt to $SERVICEMIX_HOME/datainsert --> NO record written in table, NO new message on registerCall queue
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- camel-persistence-part2/data/csv-one-record-failjms-faildb.txt to $SERVICEMIX_HOME/datainsert --> NO record written in table, NO new message on registerCall queue
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Idempotent example
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==================
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1) Cd idempotent
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2) Execute mvn camel:run
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3) Start H2 console and connect to the DB using the following parameters
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Driver class = org.h2.Driver
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JDBC URL : jdbc:h2:tcp://localhost/~/idempotentReport
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User name : sa
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Password :
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4) Enter the following request to verify that no records have been inserted
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SELECT * FROM CAMEL_MESSAGEPROCESSED
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5) Copy the following file
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cp cp ../data/csv-one-record.txt datainsert/
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6) The exchange is not filters out and camel logs that
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%%% File receive -> csv-one-record.txt
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7) Shutdown the camel route and restart
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Verify after copying the file that the camel route will not display the following message
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%%% File receive -> csv-one-record.txt
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Aggregator example
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==================
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1) Cd aggregator
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2) Start H2 console and connect to the DB using the following parameters
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Driver class = org.h2.Driver
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JDBC URL : jdbc:h2:tcp://localhost/~/aggregationReport
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User name : sa
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Password :
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3) Create the DB using script in directory sql/init.sql
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4) Execute mvn camel:run
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5) Shutdown camel when 2-3 exchanges have been aggregated
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>>> (file-to-queue) from(timer://demo?period=2000&repeatCount=15) --> ref:users method: getUser <<< Pattern:InOnly, Headers:{firedTime=Wed Nov 23 11:38:51 CET 2011, breadcrumbId=ID-biker-chm-local-53796-1322044729997-0-2}, BodyType:null, Body:[Body is null]
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>>> (file-to-queue) ref:users method: getUser --> aggregate <<< Pattern:InOnly, Headers:{firedTime=Wed Nov 23 11:38:51 CET 2011, breadcrumbId=ID-biker-chm-local-53796-1322044729997-0-2, id=FUSE}, BodyType:String, Body:Charles,
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>>> (file-to-queue) from(timer://demo?period=2000&repeatCount=15) --> ref:users method: getUser <<< Pattern:InOnly, Headers:{breadcrumbId=ID-biker-chm-local-53796-1322044729997-0-5, firedTime=Wed Nov 23 11:38:53 CET 2011}, BodyType:null, Body:[Body is null]
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>>> (file-to-queue) ref:users method: getUser --> aggregate <<< Pattern:InOnly, Headers:{firedTime=Wed Nov 23 11:38:53 CET 2011, id=FUSE, breadcrumbId=ID-biker-chm-local-53796-1322044729997-0-5}, BodyType:String, Body:Raul,
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6) Verify that a blob object exist in the DB
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SELECT * FROM AGGREGATIONREPO1
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7) Restart camel route and verify that aggregation process continues
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‎aggregator/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>com.fusesource.examples</groupId>
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<artifactId>camel-persistence-part2</artifactId>
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<version>1.0</version>
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</parent>
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<groupId>com.fusesource.examples.camel-persistence-part2</groupId>
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<artifactId>aggregator</artifactId>
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<name>FuseSource :: Examples :: Fuse ESB &amp; Persistence :: Camel - Aggregator</name>
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<dependencies>
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<dependency>
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<groupId>com.fusesource.examples.camel-persistence-part2</groupId>
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<artifactId>dao</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>org.springframework.jdbc</artifactId>
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<version>${spring-version}</version>
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</dependency>
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<version>${h2-version}</version>
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</dependency>
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<dependency>
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<groupId>commons-dbcp</groupId>
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<artifactId>commons-dbcp</artifactId>
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<version>1.4</version>
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</dependency>
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<dependency>
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<groupId>org.apache.openjpa</groupId>
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<artifactId>openjpa</artifactId>
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<version>2.1.0</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.camel</groupId>
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<artifactId>camel-core</artifactId>
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<version>${camel-version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.camel</groupId>
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<artifactId>camel-spring</artifactId>
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<version>${camel-version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.camel</groupId>
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<artifactId>camel-sql</artifactId>
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<version>${camel-version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.camel</groupId>
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<artifactId>camel-bindy</artifactId>
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<version>${camel-version}</version>
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</dependency>
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<!-- Logging -->
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-log4j12</artifactId>
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<version>${slf4j-version}</version>
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</dependency>
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<dependency>
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<groupId>log4j</groupId>
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<artifactId>log4j</artifactId>
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<version>${log4j-version}</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.camel</groupId>
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<artifactId>camel-maven-plugin</artifactId>
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<version>${camel-version}</version>
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<configuration>
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<applicationContextUri>META-INF/spring/camelRoutes.xml</applicationContextUri>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎aggregator/src/main/java/com/fusesource/examples/persistence/part2/aggregator/MyAggregationStrategy.java

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package com.fusesource.examples.persistence.part2.aggregator;
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/**
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* Copyright 2011 FuseSource
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import org.apache.camel.Exchange;
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import org.apache.camel.processor.aggregate.AggregationStrategy;
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public class MyAggregationStrategy implements AggregationStrategy {
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public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
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if (oldExchange == null) {
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return newExchange;
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}
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String body1 = oldExchange.getIn().getBody(String.class);
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String body2 = newExchange.getIn().getBody(String.class);
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oldExchange.getIn().setBody(body1 + body2);
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return oldExchange;
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}
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}

‎aggregator/src/main/java/com/fusesource/examples/persistence/part2/aggregator/Users.java

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package com.fusesource.examples.persistence.part2.aggregator;
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/**
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* Copyright 2011 FuseSource
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import org.apache.camel.Exchange;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.List;
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public class Users implements Serializable {
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private static List<String> aList = new ArrayList<String>();
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private static int count = -1;
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static {
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aList.add("Charles, ");
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aList.add("Raul, ");
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aList.add("Emma, ");
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aList.add("Corine, ");
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aList.add("James, ");
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aList.add("Rich, ");
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aList.add("Claus, ");
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aList.add("Hiram, ");
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aList.add("Gert, ");
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aList.add("Willem, ");
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aList.add("Larry, ");
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aList.add("Matt.");
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}
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public void getUser(Exchange ex) throws Exception {
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if (count <= 10) {
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count++;
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}
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if (count == 3) {
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// throw new Exception("$$$ The machine has crashed.");
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}
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ex.getIn().setHeader("id","FUSE");
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ex.getIn().setBody(aList.get(count));
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}
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}

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