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31.9. Script Examples

The following examples demonstrate various tasks to assist in the reader's understanding of the scripting syntax, and to get ideas on what tasks may be suitable for scripts in each environment.

Example 31.6. Distributed Execution

The following is a script that runs within a Distributed Executor. Each node will return its address, and all nodes will be collected in a List to be returned to the client:

// mode:distributed,language=javascript
cacheManager.getAddress().toString();

// mode:distributed,language=javascript
cacheManager.getAddress().toString();

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Example 31.7. Word Count Stream

The following is a script that runs on the local cache, counting the occurrences of each word in the result set, and then returning the words and their occurrences in a key, value pairing:

// mode=local,language=javascript
var Function = Java.type("java.util.function.Function")
var Collectors = Java.type("java.util.stream.Collectors")
var Arrays = Java.type("org.infinispan.scripting.utils.JSArrays")
cache
    .entrySet().stream()
    .map(function(e) e.getValue())
    .map(function(v) v.toLowerCase())
    .map(function(v) v.split(/[\W]+/))
    .flatMap(function(f) Arrays.stream(f))
    .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));

// mode=local,language=javascript
var Function = Java.type("java.util.function.Function")
var Collectors = Java.type("java.util.stream.Collectors")
var Arrays = Java.type("org.infinispan.scripting.utils.JSArrays")
cache
    .entrySet().stream()
    .map(function(e) e.getValue())
    .map(function(v) v.toLowerCase())
    .map(function(v) v.split(/[\W]+/))
    .flatMap(function(f) Arrays.stream(f))
    .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));

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31.9. Script Examples

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