/*********************************************************************************************************************** * Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu) * * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * specific language governing permissions and limitations under the License. **********************************************************************************************************************/ package eu.stratosphere.types; import java.io.DataInput; import java.io.DataOutput; import java.io.IOException; import eu.stratosphere.core.memory.DataInputView; import eu.stratosphere.core.memory.DataOutputView; /** * Boxed serializable and comparable single precision floating point type, representing the primitive * type {@code float}. * * @see eu.stratosphere.types.Key */ public class FloatValue implements Key<FloatValue>, ResettableValue<FloatValue>, CopyableValue<FloatValue> { private static final long serialVersionUID = 1L; private float value; /** * Initializes the encapsulated float with 0.0. */ public FloatValue() { this.value = 0; } /** * Initializes the encapsulated float with the provided value. * * @param value * Initial value of the encapsulated float. */ public FloatValue(float value) { this.value = value; } /** * Returns the value of the encapsulated primitive float. * * @return the value of the encapsulated primitive float. */ public float getValue() { return this.value; } /** * Sets the value of the encapsulated primitive float. * * @param value * the new value of the encapsulated primitive float. */ public void setValue(float value) { this.value = value; } @Override public void setValue(FloatValue value) { this.value = value.value; } // -------------------------------------------------------------------------------------------- @Override public void read(DataInput in) throws IOException { this.value = in.readFloat(); } @Override public void write(DataOutput out) throws IOException { out.writeFloat(this.value); } // -------------------------------------------------------------------------------------------- @Override public String toString() { return String.valueOf(this.value); } @Override public int compareTo(FloatValue o) { final double other = o.value; return this.value < other ? -1 : this.value > other ? 1 : 0; } @Override public int hashCode() { return Float.floatToIntBits(this.value); } @Override public boolean equals(final Object obj) { if (obj.getClass() == FloatValue.class) { final FloatValue other = (FloatValue) obj; return Float.floatToIntBits(this.value) == Float.floatToIntBits(other.value); } return false; } // -------------------------------------------------------------------------------------------- @Override public int getBinaryLength() { return 4; } @Override public void copyTo(FloatValue target) { target.value = this.value; } @Override public void copy(DataInputView source, DataOutputView target) throws IOException { target.write(source, 4); } }