Java library implementing the access expression DSL which can be used to determine if data is visible to an entity with a set of authorizations. For a conceptual overview of what an access expression is, see the specification document. See the Getting Started section for an example of how to use this java library.
This library provides the same functionality, semantics, and syntax as the Apache Accumulo ColumnVisibility and VisibilityEvaluator classes. This functionality is provided in a standalone java library that has no dependencies (for example no Hadoop, Zookeeper, Thrift, etc dependencies).
The following types constitute the public API of this library. All other types are package private and are not part of the public API.
Add the library to your CLASSPATH. For Maven, use:
<dependencies> <dependency> <groupId>org.apache.accumulo</groupId> <artifactId>accumulo-access</artifactId> <version>${version.accumulo-access}</version> </dependency> </dependencies>
To run AccessExample
mvn clean package java --module-path=core/target/accumulo-access-core-1.0.0-SNAPSHOT.jar:examples/target/accumulo-access-examples-1.0.0-SNAPSHOT.jar --module=accumulo.access.examples/org.apache.accumulo.access.examples.AccessExample java --module-path=core/target/accumulo-access-core-1.0.0-SNAPSHOT.jar:examples/target/accumulo-access-examples-1.0.0-SNAPSHOT.jar --module=accumulo.access.examples/org.apache.accumulo.access.examples.AccessExample RED BLUE
Note that data6 is always returned, because it has no access expression. And remember, authorizations are case-sensitive.
To run ParseExamples
mvn clean package java --module-path=core/target/accumulo-access-core-1.0.0-SNAPSHOT.jar:examples/target/accumulo-access-examples-1.0.0-SNAPSHOT.jar --module=accumulo.access.examples/org.apache.accumulo.access.examples.ParseExamples
For an ANTLRv4 example, see its README.
This project includes a JMH Benchmark. To run it:
mvn clean verify -pl core -Pbenchmark