Mercurial > dive4elements > river
view flys-backend/src/main/java/de/intevation/flys/importer/ValueKey.java @ 2371:fe89d6cf55fb
Added support for official gauge numbers.
flys-backend/trunk@3464 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Mon, 19 Dec 2011 11:21:25 +0000 |
parents | 6dc847194625 |
children |
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package de.intevation.flys.importer; import java.math.BigDecimal; import java.util.Comparator; public class ValueKey { public static final double EPSILON = 1e-6; public static final Comparator<ValueKey> EPSILON_COMPARATOR = new Comparator<ValueKey>() { public int compare(ValueKey x, ValueKey y) { int cmp = ValueKey.compare(x.a, y.a); if (cmp != 0) return cmp; return ValueKey.compare(x.b, y.b); } }; public static int compare(BigDecimal a, BigDecimal b) { if (a == null && b == null) return 0; if (a != null && b == null) return +1; if (a == null && b != null) return -1; double diff = a.doubleValue() - b.doubleValue(); if (diff < -EPSILON) return -1; return diff > EPSILON ? +1 : 0; } protected BigDecimal a; protected BigDecimal b; public ValueKey() { } public ValueKey(BigDecimal a, BigDecimal b) { this.a = a; this.b = b; } @Override public int hashCode() { return ((a != null ? a.hashCode() : 0) << 16) | (b != null ? b.hashCode() : 0); } @Override public boolean equals(Object other) { if (!(other instanceof ValueKey)) { return false; } ValueKey o = (ValueKey)other; return !( (a == null && o.a != null) || (a != null && o.a == null) || (a != null && !a.equals(o.a)) || (b == null && o.b != null) || (b != null && o.b == null) || (b != null && !b.equals(o.b))); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :