SonarCube fixes - visibility of member attributes

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1771583 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hpsf/ClassID.java

@@ -17,6 +17,8 @@
 
 package org.apache.poi.hpsf;
 
+import java.util.Arrays;
+
 import org.apache.poi.util.HexDump;
 import org.apache.poi.util.StringUtil;
 
@@ -40,12 +42,15 @@ public class ClassID
     public static final ClassID POWERPOINT95  = new ClassID("{EA7BAE70-FB3B-11CD-A903-00AA00510EA3}");
     public static final ClassID EQUATION30    = new ClassID("{0002CE02-0000-0000-C000-000000000046}");
 	
+    /** <p>The number of bytes occupied by this object in the byte
+     * stream.</p> */
+    public static final int LENGTH = 16;
 	
     /**
      * <p>The bytes making out the class ID in correct order,
      * i.e. big-endian.</p>
      */
-    protected byte[] bytes;
+    private final byte[] bytes = new byte[LENGTH];
 
 
 
@@ -56,8 +61,7 @@ public class ClassID
      * @param src The byte array to read from.
      * @param offset The offset of the first byte to read.
      */
-    public ClassID(final byte[] src, final int offset)
-    {
+    public ClassID(final byte[] src, final int offset) {
         read(src, offset);
     }
 
@@ -66,11 +70,8 @@ public class ClassID
      *  <p>Creates a {@link ClassID} and initializes its value with
      *  0x00 bytes.</p>
      */
-    public ClassID()
-    {
-        bytes = new byte[LENGTH];
-        for (int i = 0; i < LENGTH; i++)
-            bytes[i] = 0x00;
+    public ClassID() {
+        Arrays.fill(bytes, (byte)0);
     }
 
 
@@ -81,7 +82,6 @@ public class ClassID
      * @param externalForm representation of the Class ID represented by this object.
      */
     public ClassID(String externalForm) {
-    	bytes = new byte[LENGTH];
         String clsStr = externalForm.replaceAll("[{}-]", "");
         for (int i=0; i<clsStr.length(); i+=2) {
         	bytes[i/2] = (byte)Integer.parseInt(clsStr.substring(i, i+2), 16);
@@ -89,16 +89,11 @@ public class ClassID
     }
     
 
-    /** <p>The number of bytes occupied by this object in the byte
-     * stream.</p> */
-    public static final int LENGTH = 16;
-
     /**
      * @return The number of bytes occupied by this object in the byte
      * stream.
      */
-    public int length()
-    {
+    public int length() {
         return LENGTH;
     }
 
@@ -110,8 +105,7 @@ public class ClassID
      *
      * @return the bytes making out the class ID.
      */
-    public byte[] getBytes()
-    {
+    public byte[] getBytes() {
         return bytes;
     }
 
@@ -123,10 +117,8 @@ public class ClassID
      * @param bytes The bytes making out the class ID in big-endian format. They
      * are copied without their order being changed.
      */
-    public void setBytes(final byte[] bytes)
-    {
-        for (int i = 0; i < this.bytes.length; i++)
-            this.bytes[i] = bytes[i];
+    public void setBytes(final byte[] bytes) {
+        System.arraycopy(bytes, 0, this.bytes, 0, LENGTH);
     }
 
 
@@ -141,10 +133,7 @@ public class ClassID
      *
      * @return A byte array containing the class ID.
      */
-    public byte[] read(final byte[] src, final int offset)
-    {
-        bytes = new byte[16];
-
+    public byte[] read(final byte[] src, final int offset) {
         /* Read double word. */
         bytes[0] = src[3 + offset];
         bytes[1] = src[2 + offset];
@@ -160,8 +149,7 @@ public class ClassID
         bytes[7] = src[6 + offset];
 
         /* Read 8 bytes. */
-        for (int i = 8; i < 16; i++)
-            bytes[i] = src[i + offset];
+        System.arraycopy(src, 8 + offset, bytes, 8, 8);
 
         return bytes;
     }
@@ -180,13 +168,14 @@ public class ClassID
      * ID 16 bytes in the byte array after the <var>offset</var> position.
      */
     public void write(final byte[] dst, final int offset)
-    throws ArrayStoreException
-    {
+    throws ArrayStoreException {
         /* Check array size: */
-        if (dst.length < 16)
+        if (dst.length < LENGTH) {
             throw new ArrayStoreException
                 ("Destination byte[] must have room for at least 16 bytes, " +
                  "but has a length of only " + dst.length + ".");
+        }
+        
         /* Write double word. */
         dst[0 + offset] = bytes[3];
         dst[1 + offset] = bytes[2];
@@ -202,8 +191,7 @@ public class ClassID
         dst[7 + offset] = bytes[6];
 
         /* Write 8 bytes. */
-        for (int i = 8; i < 16; i++)
-            dst[i + offset] = bytes[i];
+        System.arraycopy(bytes, 8, dst, 8 + offset, 8);
     }
 
 
@@ -217,16 +205,19 @@ public class ClassID
      * <code>false</code>.
      */
     @Override
-    public boolean equals(final Object o)
-    {
-        if (o == null || !(o instanceof ClassID))
+    public boolean equals(final Object o) {
+        if (o == null || !(o instanceof ClassID)) {
             return false;
+        }
         final ClassID cid = (ClassID) o;
-        if (bytes.length != cid.bytes.length)
+        if (bytes.length != cid.bytes.length) {
             return false;
-        for (int i = 0; i < bytes.length; i++)
-            if (bytes[i] != cid.bytes[i])
+        }
+        for (int i = 0; i < bytes.length; i++) {
+            if (bytes[i] != cid.bytes[i]) {
                 return false;
+            }
+        }
         return true;
     }
 
@@ -236,8 +227,7 @@ public class ClassID
      * @see Object#hashCode()
      */
     @Override
-    public int hashCode()
-    {
+    public int hashCode() {
         return new String(bytes, StringUtil.UTF8).hashCode();
     }
 
@@ -248,18 +238,16 @@ public class ClassID
      * @return String representation of the Class ID represented by this object.
      */
     @Override
-    public String toString()
-    {
-        StringBuffer sbClassId = new StringBuffer(38);
+    public String toString() {
+        StringBuilder sbClassId = new StringBuilder(38);
         sbClassId.append('{');
-        for (int i = 0; i < 16; i++)
-        {
+        for (int i = 0; i < LENGTH; i++) {
             sbClassId.append(HexDump.toHex(bytes[i]));
-            if (i == 3 || i == 5 || i == 7 || i == 9)
+            if (i == 3 || i == 5 || i == 7 || i == 9) {
                 sbClassId.append('-');
+            }
         }
         sbClassId.append('}');
         return sbClassId.toString();
     }
-
 }

src/scratchpad/src/org/apache/poi/hdgf/HDGFLZWCompressor.java

@@ -30,35 +30,35 @@ import java.io.OutputStream;
  * TODO Fix this, as it starts to go wrong on
  *  large streams 
  */
-final class HDGFLZWCompressor {
+/* package */ final class HDGFLZWCompressor {
 	// We use 12 bit codes:
 	// * 0-255 are real bytes
 	// * 256-4095 are the substring codes
 	// Java handily initialises our buffer / dictionary
 	//  to all zeros
-	byte[] dict = new byte[4096];
+	private byte[] dict = new byte[4096];
 
 	// The next block of data to be written out, minus
 	//  its mask byte
-	byte[] buffer = new byte[16];
+	private byte[] buffer = new byte[16];
 	// And how long it is
 	// (Un-compressed codes are 1 byte each, compressed codes
 	//   are two)
-	int bufferLen = 0;
+	private int bufferLen = 0;
 
 	// The raw length of a code is limited to 4 bits + 2
-	byte[] rawCode = new byte[18];
+	private byte[] rawCode = new byte[18];
 	// And how much we're using
-	int rawCodeLen = 0;
+	private int rawCodeLen = 0;
 
 	// How far through the input and output streams we are
-	int posInp = 0;
-	int posOut = 0;
+	private int posInp = 0;
+	private int posOut = 0;
 
 	// What the next mask byte to output will be
-	int nextMask = 0;
+	private int nextMask = 0;
 	// And how many bits we've already set
-	int maskBitsSet = 0;
+	private int maskBitsSet = 0;
 
 	public HDGFLZWCompressor() {}
 	

src/scratchpad/src/org/apache/poi/hdgf/chunks/Chunk.java

@@ -95,7 +95,7 @@ public final class Chunk {
 	public int getOnDiskSize() {
 		int size = header.getSizeInBytes() + contents.length;
 		if(trailer != null) {
-			size += trailer.trailerData.length;
+			size += trailer.getTrailerData().length;
 		}
 		if(separator != null) {
 			size += separator.separatorData.length;

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkFactory.java

@@ -130,7 +130,7 @@ public final class ChunkFactory {
 		ChunkHeader header =
 			ChunkHeader.createChunkHeader(version, data, offset);
 		// Sanity check
-		if(header.length < 0) {
+		if(header.getLength() < 0) {
 			throw new IllegalArgumentException("Found a chunk with a negative length, which isn't allowed");
 		}
 
@@ -144,14 +144,14 @@ public final class ChunkFactory {
 				"Header called for " + header.getLength() +" bytes, but that would take us past the end of the data!");
 
 			endOfDataPos = data.length;
-			header.length = data.length - offset - header.getSizeInBytes();
+			header.setLength(data.length - offset - header.getSizeInBytes());
 
 			if(header.hasTrailer()) {
-				header.length -= 8;
+				header.setLength(header.getLength() - 8);
 				endOfDataPos  -= 8;
 			}
 			if(header.hasSeparator()) {
-				header.length -= 4;
+                header.setLength(header.getLength() - 4);
 				endOfDataPos  -= 4;
 			}
 		}

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkHeader.java

@@ -25,10 +25,10 @@ import java.nio.charset.Charset;
  * A chunk header
  */
 public abstract class ChunkHeader {
-	protected int type;
-	protected int id;
-	protected int length;
-	protected int unknown1;
+	private int type;
+	private int id;
+	private int length;
+	private int unknown1;
 
 	/**
 	 * Creates the appropriate ChunkHeader for the Chunk Header at
@@ -42,23 +42,23 @@ public abstract class ChunkHeader {
 			} else {
 				ch = new ChunkHeaderV6();
 			}
-			ch.type = (int)LittleEndian.getUInt(data, offset + 0);
-			ch.id   = (int)LittleEndian.getUInt(data, offset + 4);
-			ch.unknown1 = (int)LittleEndian.getUInt(data, offset + 8);
-			ch.length   = (int)LittleEndian.getUInt(data, offset + 12);
-			ch.unknown2 = LittleEndian.getShort(data, offset + 16);
-			ch.unknown3 = LittleEndian.getUByte(data, offset + 18);
+			ch.setType((int)LittleEndian.getUInt(data, offset + 0));
+			ch.setId((int)LittleEndian.getUInt(data, offset + 4));
+			ch.setUnknown1((int)LittleEndian.getUInt(data, offset + 8));
+			ch.setLength((int)LittleEndian.getUInt(data, offset + 12));
+			ch.setUnknown2(LittleEndian.getShort(data, offset + 16));
+			ch.setUnknown3(LittleEndian.getUByte(data, offset + 18));
 
 			return ch;
 		} else if(documentVersion == 5 || documentVersion == 4) {
 			ChunkHeaderV4V5 ch = new ChunkHeaderV4V5();
 
-			ch.type = LittleEndian.getShort(data, offset + 0);
-			ch.id   = LittleEndian.getShort(data, offset + 2);
-			ch.unknown2 = LittleEndian.getUByte(data, offset + 4);
-			ch.unknown3 = LittleEndian.getUByte(data, offset + 5);
-			ch.unknown1 = LittleEndian.getShort(data, offset + 6);
-			ch.length   = (int)LittleEndian.getUInt(data, offset + 8);
+			ch.setType(LittleEndian.getShort(data, offset + 0));
+			ch.setId(LittleEndian.getShort(data, offset + 2));
+			ch.setUnknown2(LittleEndian.getUByte(data, offset + 4));
+			ch.setUnknown3(LittleEndian.getUByte(data, offset + 5));
+			ch.setUnknown1(LittleEndian.getShort(data, offset + 6));
+			ch.setLength((int)LittleEndian.getUInt(data, offset + 8));
 
 			return ch;
 		} else {
@@ -90,6 +90,7 @@ public abstract class ChunkHeader {
 	public int getId() {
 		return id;
 	}
+
 	/**
 	 * Returns the length of the trunk, excluding the length
 	 *  of the header, trailer or separator.
@@ -97,6 +98,7 @@ public abstract class ChunkHeader {
 	public int getLength() {
 		return length;
 	}
+
 	/**
 	 * Returns the type of the chunk, which affects the
 	 *  mandatory information
@@ -104,7 +106,24 @@ public abstract class ChunkHeader {
 	public int getType() {
 		return type;
 	}
+
 	public int getUnknown1() {
 		return unknown1;
 	}
+
+    void setType(int type) {
+        this.type = type;
+    }
+
+    void setId(int id) {
+        this.id = id;
+    }
+
+    void setLength(int length) {
+        this.length = length;
+    }
+
+    void setUnknown1(int unknown1) {
+        this.unknown1 = unknown1;
+    }
 }

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkHeaderV11.java

@@ -23,30 +23,45 @@ import java.nio.charset.Charset;
  * A chunk header from v11+
  */
 public final class ChunkHeaderV11 extends ChunkHeaderV6 {
-	/**
-	 * Does the chunk have a separator?
-	 */
-	public boolean hasSeparator() {
-		// For some reason, there are two types that don't have a
-		//  separator despite the flags that indicate they do
-		if(type == 0x1f || type == 0xc9) { return false; }
-
-		// If there's a trailer, there's a separator
-		if(hasTrailer()) { return true; }
-
-		if(unknown2 == 2 && unknown3 == 0x55) { return true; }
-		if(unknown2 == 2 && unknown3 == 0x54 && type == 0xa9) { return true; }
-		if(unknown2 == 2 && unknown3 == 0x54 && type == 0xaa) { return true; }
-		if(unknown2 == 2 && unknown3 == 0x54 && type == 0xb4) { return true; }
-		if(unknown2 == 2 && unknown3 == 0x54 && type == 0xb6) { return true; }
-		if(unknown2 == 3 && unknown3 != 0x50) { return true; }
-		if(type == 0x69) { return true; }
-
-		return false;
-	}
-
-	@Override
-	public Charset getChunkCharset() {
-		return Charset.forName("UTF-16LE");
-	}
+    /**
+     * Does the chunk have a separator?
+     */
+    public boolean hasSeparator() {
+        short unknown2 = getUnknown2();
+        short unknown3 = getUnknown3();
+        
+        switch (getType()) {
+            case 0x1f: case 0xc9:
+                // For some reason, there are two types that don't have a
+                //  separator despite the flags that indicate they do
+                return false;
+            
+            case 0x69:
+                return true;
+
+            case 0xa9: case 0xaa: case 0xb4: case 0xb6:
+                if (unknown2 == 2 && unknown3 == 0x54) {
+                    return true;
+                }
+                break;
+                
+            default:
+                break;
+        }
+
+        if (
+            (unknown2 == 2 && unknown3 == 0x55) || 
+            (unknown2 == 3 && unknown3 != 0x50)
+        ) { 
+            return true; 
+        }
+        
+        // If there's a trailer, there's a separator
+        return hasTrailer();
+    }
+
+    @Override
+    public Charset getChunkCharset() {
+        return Charset.forName("UTF-16LE");
+    }
 }

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkHeaderV4V5.java

@@ -23,8 +23,8 @@ import java.nio.charset.Charset;
  * A chunk header from v4 or v5
  */
 public final class ChunkHeaderV4V5 extends ChunkHeader {
-	protected short unknown2;
-	protected short unknown3;
+	private short unknown2;
+	private short unknown3;
 
 	public short getUnknown2() {
 		return unknown2;
@@ -61,4 +61,12 @@ public final class ChunkHeaderV4V5 extends ChunkHeader {
 	public Charset getChunkCharset() {
 		return Charset.forName("ASCII");
 	}
+
+	void setUnknown2(short unknown2) {
+        this.unknown2 = unknown2;
+    }
+
+    void setUnknown3(short unknown3) {
+        this.unknown3 = unknown3;
+    }
 }

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkHeaderV6.java

@@ -23,8 +23,8 @@ import java.nio.charset.Charset;
  * A chunk header from v6
  */
 public class ChunkHeaderV6 extends ChunkHeader {
-	protected short unknown2;
-	protected short unknown3;
+	private short unknown2;
+	private short unknown3;
 
 	public short getUnknown2() {
 		return unknown2;
@@ -45,15 +45,15 @@ public class ChunkHeaderV6 extends ChunkHeader {
 	 * Does the chunk have a trailer?
 	 */
 	public boolean hasTrailer() {
-		if(unknown1 != 0 || type == 0x71 || type == 0x70) {
-			return true;
-		}
-		if(type == 0x6b || type == 0x6a || type == 0x69 || type == 0x66
-				|| type == 0x65 || type == 0x2c) {
-			return true;
-		}
-		return false;
+	    switch (getType()) {
+    	    case 0x2c: case 0x65: case 0x66: case 0x69:
+    	    case 0x6a: case 0x6b: case 0x70: case 0x71:
+    	        return true;
+            default:
+                return (getUnknown1() != 0);
+	    }
 	}
+
 	/**
 	 * Does the chunk have a separator?
 	 */
@@ -66,4 +66,12 @@ public class ChunkHeaderV6 extends ChunkHeader {
 	public Charset getChunkCharset() {
 		return Charset.forName("ASCII");
 	}
+
+    void setUnknown2(short unknown2) {
+        this.unknown2 = unknown2;
+    }
+
+    void setUnknown3(short unknown3) {
+        this.unknown3 = unknown3;
+    }
 }

src/scratchpad/src/org/apache/poi/hdgf/chunks/ChunkTrailer.java

@@ -21,7 +21,7 @@ package org.apache.poi.hdgf.chunks;
  * A trailer that follows a chunk
  */
 public final class ChunkTrailer {
-	protected byte[] trailerData;
+	private byte[] trailerData;
 
 	public ChunkTrailer(byte[] data, int offset) {
 		trailerData = new byte[8];
@@ -31,4 +31,8 @@ public final class ChunkTrailer {
 	public String toString() {
 		return "<ChunkTrailer of length " + trailerData.length + ">";
 	}
+
+    byte[] getTrailerData() {
+        return trailerData;
+    }
 }

src/scratchpad/src/org/apache/poi/hdgf/dev/VSDDumper.java

@@ -37,8 +37,8 @@ import org.apache.poi.poifs.filesystem.NPOIFSFileSystem;
 public final class VSDDumper {
     final static String tabs = "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
     
-    final PrintStream ps;
-    final HDGFDiagram hdgf;
+    private final PrintStream ps;
+    private final HDGFDiagram hdgf;
     VSDDumper(PrintStream ps, HDGFDiagram hdgf) {
         this.ps = ps;
         this.hdgf = hdgf;

src/scratchpad/src/org/apache/poi/hdgf/pointers/Pointer.java

@@ -22,11 +22,11 @@ package org.apache.poi.hdgf.pointers;
  *  blocks elsewhere in the file
  */
 public abstract class Pointer {
-    protected int type;
-    protected int address;
-    protected int offset;
-    protected int length;
-    protected short format;
+    private int type;
+    private int address;
+    private int offset;
+    private int length;
+    private short format;
 
     public int getAddress() {
         return address;
@@ -53,4 +53,25 @@ public abstract class Pointer {
     public abstract boolean destinationHasPointers();
     public abstract boolean destinationHasChunks();
     public abstract boolean destinationCompressed();
+
+    protected void setType(int type) {
+        this.type = type;
+    }
+    protected void setAddress(int address) {
+        this.address = address;
+    }
+    protected void setOffset(int offset) {
+        this.offset = offset;
+    }
+    protected void setLength(int length) {
+        this.length = length;
+    }
+    protected void setFormat(short format) {
+        this.format = format;
+    }
+    
+    protected boolean isFormatBetween(int min, int max) {
+        return (min <= format && format < max);
+    }
+
 }

src/scratchpad/src/org/apache/poi/hdgf/pointers/PointerFactory.java

@@ -38,20 +38,20 @@ public final class PointerFactory {
         Pointer p;
         if(version >= 6) {
             p = new PointerV6();
-            p.type = LittleEndian.getInt(data, offset+0);
-            p.address = (int)LittleEndian.getUInt(data, offset+4);
-            p.offset = (int)LittleEndian.getUInt(data, offset+8);
-            p.length = (int)LittleEndian.getUInt(data, offset+12);
-            p.format = LittleEndian.getShort(data, offset+16);
+            p.setType(LittleEndian.getInt(data, offset+0));
+            p.setAddress((int)LittleEndian.getUInt(data, offset+4));
+            p.setOffset((int)LittleEndian.getUInt(data, offset+8));
+            p.setLength((int)LittleEndian.getUInt(data, offset+12));
+            p.setFormat(LittleEndian.getShort(data, offset+16));
 
             return p;
         } else if(version == 5) {
             p = new PointerV5();
-            p.type = LittleEndian.getShort(data, offset+0);
-            p.format = LittleEndian.getShort(data, offset+2);
-            p.address = (int)LittleEndian.getUInt(data, offset+4);
-            p.offset = (int)LittleEndian.getUInt(data, offset+8);
-            p.length = (int)LittleEndian.getUInt(data, offset+12);
+            p.setType(LittleEndian.getShort(data, offset+0));
+            p.setFormat(LittleEndian.getShort(data, offset+2));
+            p.setAddress((int)LittleEndian.getUInt(data, offset+4));
+            p.setOffset((int)LittleEndian.getUInt(data, offset+8));
+            p.setLength((int)LittleEndian.getUInt(data, offset+12));
 
             return p;
         } else {

src/scratchpad/src/org/apache/poi/hdgf/pointers/PointerV5.java

@@ -25,33 +25,34 @@ import org.apache.poi.util.LittleEndian;
 public final class PointerV5 extends Pointer {
     // TODO Are these getters correct?
     public boolean destinationHasStrings() {
-        return (0x40 <= format && format < 0x50);
+        return isFormatBetween(0x40, 0x50);
     }
+    
     public boolean destinationHasPointers() {
-        if(type == 20) {
-            return true;
+        switch (getType()) {
+            case 20:
+                return true;
+            case 22:
+                return false;
+            default:
+                return isFormatBetween(0x1d, 0x1f) || isFormatBetween(0x50, 0x60);
         }
-        if(type == 22) {
-            return false;
-        }
-        if(format == 0x1d || format == 0x1e) {
-            return true;
-        }
-        return (0x50 <= format && format < 0x60);
     }
+ 
     public boolean destinationHasChunks() {
-        if (type == 21) {
-            return true;
-        }
-        if (type == 24) {
-            return true;
+        switch (getType()) {
+            case 21:
+                return true;
+            case 24:
+                return true;
+            default:
+                return isFormatBetween(0xd0, 0xdf);
         }
-        return (0xd0 <= format && format < 0xdf);
     }
 
     public boolean destinationCompressed() {
         // Apparently, it's the second least significant bit
-        return (format & 2) > 0;
+        return (getFormat() & 2) > 0;
     }
 
     /**
@@ -63,7 +64,7 @@ public final class PointerV5 extends Pointer {
      * Depends on the type only, not stored
      */
     public int getNumPointersOffset(byte[] data) {
-        switch (type) {
+        switch (getType()) {
             case 0x1d:
             case 0x4e:
                 return 30;

src/scratchpad/src/org/apache/poi/hdgf/pointers/PointerV6.java

@@ -24,20 +24,19 @@ import org.apache.poi.util.LittleEndian;
  */
 public final class PointerV6 extends Pointer {
     public boolean destinationHasStrings() {
-        return (0x40 <= format && format < 0x50);
+        return isFormatBetween(0x40, 0x50);
     }
+    
     public boolean destinationHasPointers() {
-        if(type == 20) return true;
-        if(format == 0x1d || format == 0x1e) return true;
-        return (0x50 <= format && format < 0x60);
+        return (getType() == 20) || isFormatBetween(0x1d, 0x1f) || isFormatBetween(0x50, 0x60);
     }
     public boolean destinationHasChunks() {
-        return (0xd0 <= format && format < 0xdf);
+        return isFormatBetween(0xd0, 0xdf);
     }
 
     public boolean destinationCompressed() {
         // Apparently, it's the second least significant bit
-        return (format & 2) > 0;
+        return (getFormat() & 2) > 0;
     }
 
     /**

src/scratchpad/src/org/apache/poi/hpbf/model/EscherPart.java

@@ -42,6 +42,7 @@ public abstract class EscherPart extends HPBFPart {
 			new DefaultEscherRecordFactory();
 
 		ArrayList<EscherRecord> ec = new ArrayList<EscherRecord>();
+		byte data[] = getData();
 		int left = data.length;
 		while(left > 0) {
 			EscherRecord er = erf.createRecord(data, 0);
@@ -68,12 +69,14 @@ public abstract class EscherPart extends HPBFPart {
 			size += records[i].getRecordSize();
 		}
 
-		data = new byte[size];
+		byte data[] = new byte[size];
 		size = 0;
 		for(int i=0; i<records.length; i++) {
 			int thisSize =
 				records[i].serialize(size, data);
 			size += thisSize;
 		}
+		
+		setData(data);
 	}
 }

src/scratchpad/src/org/apache/poi/hpbf/model/HPBFPart.java

@@ -31,7 +31,7 @@ import org.apache.poi.util.IOUtils;
  *  for all of them.
  */
 public abstract class HPBFPart {
-	protected byte[] data;
+	private byte[] data;
 	/**
 	 * @param path  the path to the part, eg Contents or Quill, QuillSub, CONTENTS
 	 */
@@ -94,7 +94,11 @@ public abstract class HPBFPart {
 	 * Returns the raw data that makes up
 	 *  this document part.
 	 */
-	public byte[] getData() { return data; }
+	public final byte[] getData() { return data; }
+	
+	protected final void setData(byte data[]) {
+	    this.data = data.clone();
+	}
 
 	/**
 	 * Returns

src/scratchpad/src/org/apache/poi/hpbf/model/QuillContents.java

@@ -39,6 +39,7 @@ public final class QuillContents extends HPBFPart {
 
 		// Now parse the first 512 bytes, and produce
 		//  all our bits
+        byte data[] = getData();
 
 		// Check first 8 bytes
 		String f8 = new String(data, 0, 8, LocaleUtil.CHARSET_1252);

src/scratchpad/src/org/apache/poi/hpbf/model/qcbits/QCBit.java

@@ -21,15 +21,15 @@ package org.apache.poi.hpbf.model.qcbits;
  * Parent of all Quill CONTENTS bits
  */
 public abstract class QCBit {
-	protected String thingType;
-	protected String bitType;
-	protected byte[] data;
+	private String thingType;
+	private String bitType;
+	private byte[] data;
 
-	protected int optA;
-	protected int optB;
-	protected int optC;
+	private int optA;
+	private int optB;
+	private int optC;
 
-	protected int dataOffset;
+	private int dataOffset;
 
 	public QCBit(String thingType, String bitType, byte[] data) {
 		this.thingType = thingType;
@@ -47,7 +47,10 @@ public abstract class QCBit {
 	 *  or PLC
 	 */
 	public String getBitType() { return bitType; }
-	public byte[] getData() { return data; }
+	public final byte[] getData() { return data; }
+	protected final void setData(byte data[]) {
+	    this.data = data.clone();
+	}
 
 	public int getOptA() {
 		return optA;

src/scratchpad/src/org/apache/poi/hpbf/model/qcbits/QCPLCBit.java

@@ -26,18 +26,18 @@ import org.apache.poi.util.StringUtil;
  *  format is determined by the type of the PLCs.
  */
 public abstract class QCPLCBit extends QCBit {
-	protected int numberOfPLCs;
-	protected int typeOfPLCS;
+	private int numberOfPLCs;
+	private int typeOfPLCS;
 	/**
 	 * The data which goes before the main PLC entries.
 	 * This is apparently always made up of 2 byte
 	 *  un-signed ints..
 	 */
-	protected int[] preData;
+	private int[] preData;
 	/** The first value of each PLC, normally 4 bytes */
-	protected long[] plcValA;
+	private long[] plcValA;
 	/** The second value of each PLC, normally 4 bytes */
-	protected long[] plcValB;
+	private long[] plcValB;
 
 
 	private QCPLCBit(String thingType, String bitType, byte[] data) {
@@ -74,7 +74,19 @@ public abstract class QCPLCBit extends QCBit {
 		return plcValB;
 	}
 
+	final void setPreData(int preData[]) {
+	    this.preData = preData.clone();
+	}
+
+	final void setPlcValA(long[] plcValA) {
+        this.plcValA = plcValA.clone();
+    }
 
+	final void setPlcValB(long[] plcValB) {
+        this.plcValB = plcValB.clone();
+    }
+
+	
 
 	public static QCPLCBit createQCPLCBit(String thingType, String bitType, byte[] data) {
 		// Grab the type
@@ -103,17 +115,23 @@ public abstract class QCPLCBit extends QCBit {
 			super(thingType, bitType, data);
 
 			// Grab our 4x pre-data
-			preData = new int[4];
-			preData[0] = LittleEndian.getUShort(data, 8+0);
-			preData[1] = LittleEndian.getUShort(data, 8+2);
-			preData[2] = LittleEndian.getUShort(data, 8+4);
-			preData[3] = LittleEndian.getUShort(data, 8+6);
-
-			// And grab the 2 byte values
-			for(int i=0; i<numberOfPLCs; i++) {
+			int preData[] = {
+    			LittleEndian.getUShort(data, 8+0),
+    			LittleEndian.getUShort(data, 8+2),
+    			LittleEndian.getUShort(data, 8+4),
+    			LittleEndian.getUShort(data, 8+6)
+			};
+			setPreData(preData);
+
+            // And grab the 2 byte values
+			int cntPlcs = getNumberOfPLCs();
+			long plcValA[] = new long[cntPlcs], plcValB[] = new long[cntPlcs];
+			for(int i=0; i<cntPlcs; i++) {
 				plcValA[i] = LittleEndian.getUShort(data, 16+(4*i));
 				plcValB[i] = LittleEndian.getUShort(data, 16+(4*i)+2);
 			}
+			setPlcValA(plcValA);
+            setPlcValB(plcValB);
 		}
 	}
 
@@ -126,17 +144,23 @@ public abstract class QCPLCBit extends QCBit {
 			super(thingType, bitType, data);
 
 			// Grab our 4x pre-data
-			preData = new int[4];
-			preData[0] = LittleEndian.getUShort(data, 8+0);
-			preData[1] = LittleEndian.getUShort(data, 8+2);
-			preData[2] = LittleEndian.getUShort(data, 8+4);
-			preData[3] = LittleEndian.getUShort(data, 8+6);
+			int preData[] = {
+    			LittleEndian.getUShort(data, 8+0),
+    			LittleEndian.getUShort(data, 8+2),
+    			LittleEndian.getUShort(data, 8+4),
+    			LittleEndian.getUShort(data, 8+6)
+			};
+			setPreData(preData);
 
 			// And grab the 4 byte values
-			for(int i=0; i<numberOfPLCs; i++) {
+            int cntPlcs = getNumberOfPLCs();
+            long plcValA[] = new long[cntPlcs], plcValB[] = new long[cntPlcs];
+			for(int i=0; i<cntPlcs; i++) {
 				plcValA[i] = LittleEndian.getUInt(data, 16+(8*i));
 				plcValB[i] = LittleEndian.getUInt(data, 16+(8*i)+4);
 			}
+            setPlcValA(plcValA);
+            setPlcValB(plcValB);
 		}
 	}
 
@@ -149,20 +173,26 @@ public abstract class QCPLCBit extends QCBit {
 			super(thingType, bitType, data);
 
 			// Grab our 7x pre-data
-			preData = new int[7];
-			preData[0] = LittleEndian.getUShort(data, 8+0);
-			preData[1] = LittleEndian.getUShort(data, 8+2);
-			preData[2] = LittleEndian.getUShort(data, 8+4);
-			preData[3] = LittleEndian.getUShort(data, 8+6);
-			preData[4] = LittleEndian.getUShort(data, 8+8);
-			preData[5] = LittleEndian.getUShort(data, 8+10);
-			preData[6] = LittleEndian.getUShort(data, 8+12);
+			int preData[] = {
+    			LittleEndian.getUShort(data, 8+0),
+    			LittleEndian.getUShort(data, 8+2),
+    			LittleEndian.getUShort(data, 8+4),
+    			LittleEndian.getUShort(data, 8+6),
+    			LittleEndian.getUShort(data, 8+8),
+    			LittleEndian.getUShort(data, 8+10),
+    			LittleEndian.getUShort(data, 8+12)
+			};
+            setPreData(preData);
 
 			// And grab the 4 byte values
-			for(int i=0; i<numberOfPLCs; i++) {
+            int cntPlcs = getNumberOfPLCs();
+            long plcValA[] = new long[cntPlcs], plcValB[] = new long[cntPlcs];
+			for(int i=0; i<cntPlcs; i++) {
 				plcValA[i] = LittleEndian.getUInt(data, 22+(8*i));
 				plcValB[i] = LittleEndian.getUInt(data, 22+(8*i)+4);
 			}
+            setPlcValA(plcValA);
+            setPlcValB(plcValB);
 		}
 	}
 
@@ -183,37 +213,38 @@ public abstract class QCPLCBit extends QCBit {
 		private Type12(String thingType, String bitType, byte[] data) {
 			super(thingType, bitType, data);
 
+            int cntPlcs = getNumberOfPLCs();
+			
 			// How many hyperlinks do we really have?
 			// (zero hyperlinks gets numberOfPLCs=1)
-			if(data.length == 0x34) {
-				hyperlinks = new String[0];
-			} else {
-				hyperlinks = new String[numberOfPLCs];
-			}
+            hyperlinks = new String[data.length == 0x34 ? 0 : cntPlcs];
 
 			// We have 4 bytes, then the start point of each
 			//  hyperlink, then the end point of the text.
-			preData = new int[1+numberOfPLCs+1];
+			int preData[] = new int[1+cntPlcs+1];
 			for(int i=0; i<preData.length; i++) {
 				preData[i] = (int)LittleEndian.getUInt(data, 8+(i*4));
 			}
+			setPreData(preData);
 
 			// Then we have a whole bunch of stuff, which grows
 			//  with the number of hyperlinks
 			// For now, we think these are shorts
-			int at = 8+4+(numberOfPLCs*4)+4;
+			int at = 8+4+(cntPlcs*4)+4;
 			int until = 0x34;
-			if(numberOfPLCs == 1 && hyperlinks.length == 1) {
+			if(cntPlcs == 1 && hyperlinks.length == 1) {
 				until = oneStartsAt;
-			} else if(numberOfPLCs >= 2) {
-				until = twoStartsAt + (numberOfPLCs-2)*threePlusIncrement;
+			} else if(cntPlcs >= 2) {
+				until = twoStartsAt + (cntPlcs-2)*threePlusIncrement;
 			}
 
-			plcValA = new long[(until-at)/2];
-			plcValB = new long[0];
+			long plcValA[] = new long[(until-at)/2];
+			long plcValB[] = new long[0];
 			for(int i=0; i<plcValA.length; i++) {
 				plcValA[i] = LittleEndian.getUShort(data, at+(i*2));
 			}
+            setPlcValA(plcValA);
+            setPlcValB(plcValB);
 
 			// Finally, we have a series of lengths + hyperlinks
 			at = until;
@@ -259,7 +290,7 @@ public abstract class QCPLCBit extends QCBit {
 		 * @param number The hyperlink number, zero based
 		 */
 		public int getTextStartAt(int number) {
-			return preData[1+number];
+			return getPreData()[1+number];
 		}
 		/**
 		 * Returns where in the text that this block
@@ -269,7 +300,7 @@ public abstract class QCPLCBit extends QCBit {
 		 *  PLCBit applies to.
 		 */
 		public int getAllTextEndAt() {
-			return preData[numberOfPLCs+1];
+			return getPreData()[getNumberOfPLCs()+1];
 		}
 	}
 }

src/scratchpad/src/org/apache/poi/hpbf/model/qcbits/QCTextBit.java

@@ -32,13 +32,12 @@ public final class QCTextBit extends QCBit {
 	 *  are \r and not \n
 	 */
 	public String getText() {
-		return StringUtil.getFromUnicodeLE(
-				data, 0, data.length/2
-		);
+		return StringUtil.getFromUnicodeLE(getData());
 	}
 
 	public void setText(String text) {
-		data = new byte[text.length()*2];
+		byte data[] = new byte[text.length()*2];
 		StringUtil.putUnicodeLE(text, data, 0);
+		setData(data);
 	}
 }

src/scratchpad/testcases/org/apache/poi/hdgf/streams/StreamTest.java

@@ -28,10 +28,10 @@ public abstract class StreamTest extends TestCase {
         protected boolean hasPointers = false;
         public TestPointer(boolean compressed, int offset, int length, int type, short format) {
             this.compressed = compressed;
-            this.offset = offset;
-            this.length = length;
-            this.type = type;
-            this.format = format;
+            setOffset(offset);
+            setLength(length);
+            setType(type);
+            setFormat(format);
         }
 
         @Override