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Camel-Gora is an Apache Camel component that allows you to work with NoSQL databases using the Apache Gora framework. Available as of Camel 2.14 Maven users will need to add the following dependency to their pom.xml for this component: <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-gora</artifactId> <version>x.x.x</version> <!-- use the same version as your Camel core version --> </dependency> Apache Gora OverviewThe Apache Gora open source framework provides an in-memory data model and persistence for big data. Gora supports persisting to column stores, key value stores, document stores and RDBMSs, and analyzing the data with extensive Apache Hadoop™ MapReduce support. Gora uses the Apache Software License v2.0 and graduated from the Apache Incubator in Janauary 2012 to become a top-level Apache project. Apache Gora currently supports the following datastores: Apache HBase, Apache Cassandra, Apache Accumulo, Amazon DynamoDB and SQL databases such as hsqldb, MySQL and more. URI formatgora:instanceName[?options] Hbase examples with mandatory options : XML <to uri="gora:foobar?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore"/> Java DSL to("gora:foobar?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore") ConfiguratiionUsing camel-gora needs some configuration. This mainly involve to configure the AvroStore through the gora.properties file and to define the relevant mappings as part of the gora-core module. Extensive information for this configuration can be found in the apache gora documentation and the gora-conf page. Supported Gora OperationsSupported operations include : put, get, delete, getSchemaName, deleteSchema, createSchema, query, deleteByQuery, schemaExists. Some of the operations require arguments while some others no. The arguments to operations could be either the body of the in message or defined in a header property. Below there is a list with some additional info for each operation.
OptionsGora Headers
Gora Configuration attributes
NOTE: the gora configuration properties marked with asterisk are mandatory Gora Query attributes
Usage examplesCreate Schema (XML DSL): <setHeader headerName="GoraOperation"> <constant>CreateSchema</constant> </setHeader> <to uri="gora:foobar?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore"/> SchemaExists (XML DSL): <setHeader headerName="GoraOperation"> <constant>SchemaExists</constant> </setHeader> <to uri="gora:foobar?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore"/> Put (XML DSL): <setHeader headerName="GoraOperation"> <constant>put</constant> </setHeader> <setHeader headerName="GoraKey"> <constant>22222</constant> </setHeader> <to uri="gora:foo?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore"/> Get (XML DSL): <setHeader headerName="GoraOperation"> <constant>GET</constant> </setHeader> <setHeader headerName="GoraKey"> <constant>10101</constant> </setHeader> <to uri="gora:bar?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore"/> Delete (XML DSL): <setHeader headerName="GoraOperation"> <constant>DELETE</constant> </setHeader> <setHeader headerName="GoraKey"> <constant>22222</constant> </setHeader> <to uri="gora:bar?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore"/> Query (XML DSL): <to uri="gora:foobar?keyClass=java.lang.Long&valueClass=org.apache.camel.component.gora.generated.Pageview&dataStoreClass=org.apache.gora.hbase.store.HBaseStore"/> The full usage examples in the form of integration tests can be found at camel-gora-examples repository. More resourcesFor more please information and in depth configuration refer to the Apache Gora Documentation and the Apache Gora Tutorial. |