Example usage for org.apache.commons.collections4.map DefaultedMap DefaultedMap

Introduction

In this page you can find the example usage for org.apache.commons.collections4.map DefaultedMap DefaultedMap.

Prototype

public DefaultedMap(final Transformer<? super K, ? extends V> defaultValueTransformer) 

Source Link

Document

Constructs a new empty DefaultedMap that decorates a HashMap.

Usage

From source file:cz.letalvoj.fbgc.compositor.ForceDirectedDynamics.java

public ForceDirectedDynamics(Graph<V, E> graph, Vector2D viewSize) {
    this.graph = graph;
    this.viewSize = viewSize;

    this.lockedNodes = new HashSet<V>();
    this.positions = new DefaultedMap<V, Vector2D>(Vector2D.zero());
    this.velocities = new DefaultedMap<V, Vector2D>(Vector2D.zero());
}

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From source file:io.fluo.quickstart.DocumentObserver.java

@Override
public void process(TypedTransactionBase tx, Bytes row, Column column) {

    // This method is called by Fluo whenever another transaction modifies the
    // 'doc':'content' column. This method will extract the words from the
    // document at the specified row, and update the global counts for those
    // words./*w  ww. j a  v a2  s .  c om*/

    // This code does not handle high cardinality words well. The fluo
    // phrasecount example has handling for this case.

    String docContent = tx.get().row(row).col(column).toString();

    // compute how many times each word occurs in document
    Map<String, Integer> docCounts = new DefaultedMap<>(Integer.valueOf(0));
    for (String word : docContent.split("[ ]+")) {
        String wordRow = "word: " + word;
        docCounts.put(wordRow, docCounts.get(wordRow) + 1);
    }

    Map<String, Map<Column, Value>> globalCounts = tx.get().rowsString(docCounts.keySet()).columns(COUNT_COL)
            .toStringMap();

    // update global word counts
    for (String wordRow : docCounts.keySet()) {
        // Fluo TypeLayer returns defaulted maps, so no need to check if row exist
        // then check if column exist.
        int count = globalCounts.get(wordRow).get(COUNT_COL).toInteger(0);
        tx.mutate().row(wordRow).col(COUNT_COL).set(count + docCounts.get(wordRow));
    }
}

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