PhTreeMMSF

Author: tzaeschke

src/main/java/ch/ethz/globis/phtree/PhEntryDistSF.java

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+/*
+ * Copyright 2011-2025 Tilmann Zäschke. All Rights Reserved.
+ *
+ * This software is the proprietary information of Tilmann Zäschke.
+ * Use is subject to license terms.
+ */
+package ch.ethz.globis.phtree;
+
+public class PhEntryDistSF<T> extends PhEntrySF<T> {
+    private double dist;
+
+    /**
+     * @param lower lower corner of rectangle key
+     * @param upper upper corner of rectangle key
+     * @param value value
+     * @param dist distance value
+     */
+    public PhEntryDistSF(double[] lower, double[] upper, T value, double dist) {
+        super(lower, upper, value);
+        this.dist = dist;
+    }
+
+    void setValueDist(T value, double dist) {
+        setValue(value);
+        this.dist = dist;
+    }
+
+    /**
+     * @return the distance to the center point of the kNN query
+     */
+    public double dist() {
+        return dist;
+    }
+
+    @Override
+    public String toString() {
+        return super.toString() + " dist=" + dist;
+    }
+}

src/main/java/ch/ethz/globis/phtree/PhEntrySF.java

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+/*
+ * Copyright 2011-2025 Tilmann Zäschke. All Rights Reserved.
+ *
+ * This software is the proprietary information of Tilmann Zäschke.
+ * Use is subject to license terms.
+ */
+package ch.ethz.globis.phtree;
+
+import java.util.Arrays;
+
+/**
+ * Entries in a PH-tree with ranged objects.
+ * @param <T> value type of the entry
+ */
+public class PhEntrySF<T> {
+
+    private final double[] lower;
+    private final double[] upper;
+    private T value;
+
+    /**
+     * Range object constructor.
+     * @param lower lower left corner
+     * @param upper upper right corner
+     * @param value The value associated with the point
+     */
+    public PhEntrySF(double[] lower, double[] upper, T value) {
+        this.lower = lower;
+        this.upper = upper;
+        this.value = value;
+    }
+
+    /**
+     * @return the value of the entry
+     */
+    public T value() {
+        return value;
+    }
+
+    /**
+     * @return lower left corner of the entry
+     */
+    public double[] lower() {
+        return lower;
+    }
+
+    /**
+     * @return upper right corner of the entry
+     */
+    public double[] upper() {
+        return upper;
+    }
+
+    void setValue(T value) {
+        this.value = value;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof PhEntrySF)) {
+            return false;
+        }
+        PhEntrySF<T> e = (PhEntrySF<T>) obj;
+        return Arrays.equals(lower, e.lower) && Arrays.equals(upper, e.upper);
+    }
+
+    @Override
+    public int hashCode() {
+        return Arrays.hashCode(lower) ^ Arrays.hashCode(upper);
+    }
+
+    @Override
+    public String toString() {
+        return "{" + Arrays.toString(lower) + "," + Arrays.toString(upper) + "} => " + value;
+    }
+}