107 lines
3.0 KiB
Java
107 lines
3.0 KiB
Java
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/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record;
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import org.apache.poi.util.LittleEndian;
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/**
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* Title: Delta Record<P>
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* Description: controls the accuracy of the calculations<P>
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* REFERENCE: PG 303 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
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* @author Andrew C. Oliver (acoliver at apache dot org)
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* @author Jason Height (jheight at chariot dot net dot au)
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* @version 2.0-pre
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*/
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public class DeltaRecord
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extends Record
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{
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public final static short sid = 0x10;
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public final static double DEFAULT_VALUE = 0.0010; // should be .001
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// a double is an IEEE 8-byte float...damn IEEE and their goofy standards an
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// ambiguous numeric identifiers
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private double field_1_max_change;
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public DeltaRecord()
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{
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}
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public DeltaRecord(RecordInputStream in)
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{
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field_1_max_change = in.readDouble();
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}
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/**
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* set the maximum change
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* @param maxChange - maximum rounding error
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*/
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public void setMaxChange(double maxChange)
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{
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field_1_max_change = maxChange;
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}
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/**
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* get the maximum change
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* @return maxChange - maximum rounding error
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*/
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public double getMaxChange()
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{
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return field_1_max_change;
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}
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public String toString()
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{
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StringBuffer buffer = new StringBuffer();
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buffer.append("[DELTA]\n");
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buffer.append(" .maxchange = ").append(getMaxChange())
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.append("\n");
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buffer.append("[/DELTA]\n");
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return buffer.toString();
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}
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public int serialize(int offset, byte [] data)
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{
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LittleEndian.putShort(data, 0 + offset, sid);
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LittleEndian.putShort(data, 2 + offset, ( short ) 0x8);
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LittleEndian.putDouble(data, 4 + offset, getMaxChange());
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return getRecordSize();
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}
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public int getRecordSize()
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{
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return 12;
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}
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public short getSid()
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{
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return sid;
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}
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public Object clone() {
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DeltaRecord rec = new DeltaRecord();
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rec.field_1_max_change = field_1_max_change;
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return rec;
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}
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}
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