Import Upstream version 0.7.0

1 files changed, 80 insertions, 0 deletions

diff --git a/elki/src/main/java/de/lmu/ifi/dbs/elki/data/type/CombinedTypeInformation.java b/elki/src/main/java/de/lmu/ifi/dbs/elki/data/type/CombinedTypeInformation.java
new file mode 100644
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--- /dev/null
+++ b/elki/src/main/java/de/lmu/ifi/dbs/elki/data/type/CombinedTypeInformation.java
@@ -0,0 +1,80 @@
+package de.lmu.ifi.dbs.elki.data.type;
+
+/*
+ This file is part of ELKI:
+ Environment for Developing KDD-Applications Supported by Index-Structures
+
+ Copyright (C) 2015
+ Ludwig-Maximilians-Universität München
+ Lehr- und Forschungseinheit für Datenbanksysteme
+ ELKI Development Team
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Class that combines multiple type restrictions into one using an "and" operator.
+ *
+ * @author Erich Schubert
+ *
+ * @apiviz.composedOf TypeInformation
+ */
+public class CombinedTypeInformation implements TypeInformation {
+  /**
+   * The wrapped type restrictions
+   */
+  private final TypeInformation[] restrictions;
+
+  /**
+   * Constructor.
+   *
+   * @param restrictions
+   */
+  public CombinedTypeInformation(TypeInformation... restrictions) {
+    super();
+    this.restrictions = restrictions;
+  }
+
+  @Override
+  public boolean isAssignableFromType(TypeInformation type) {
+    for (int i = 0; i < restrictions.length; i++) {
+      if (!restrictions[i].isAssignableFromType(type)) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  @Override
+  public boolean isAssignableFrom(Object other) {
+    for (int i = 0; i < restrictions.length; i++) {
+      if (!restrictions[i].isAssignableFrom(other)) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder buf = new StringBuilder();
+    for (int i = 0; i < restrictions.length; i++) {
+      if (i > 0) {
+        buf.append(" AND ");
+      }
+      buf.append(restrictions[i].toString());
+    }
+    return buf.toString();
+  }
+}
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