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do not unicode compress strings which are longer than 1024 chars
git-svn-id: https://svn.code.sf.net/p/jackcess/code/jackcess/trunk@709 f203690c-595d-4dc9-a70b-905162fa7fd2tags/jackcess-1.2.11
James Ahlborn
11 years ago
3 changed files with 14 additions and 1 deletions
+ 5
- 0
src/changes/changes.xml
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| @@ -4,6 +4,11 @@ | |||
| <author email="javajedi@users.sf.net">Tim McCune</author> | |||
| </properties> | |||
| <body> | |||
| <release version="1.2.11" date="TBD"> | |||
| <action dev="jahlborn" type="fix" system="SourceForge2" issue="94"> | |||
| Do not unicode compress strings which are longer than 1024 chars. | |||
| </action> | |||
| </release> | |||
| <release version="1.2.10" date="2013-02-18"> | |||
| <action dev="jahlborn" type="update"> | |||
| Add info to the Column to support MEMO columns which are HYPERLINKS. | |||
+ 2
- 1
src/java/com/healthmarketscience/jackcess/Column.java
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| @@ -1723,7 +1723,8 @@ public class Column implements Comparable<Column> { | |||
| } | |||
| // may only compress if column type allows it | |||
| if(!forceUncompressed && isCompressedUnicode()) { | |||
| if(!forceUncompressed && isCompressedUnicode() && | |||
| (text.length() <= getFormat().MAX_COMPRESSED_UNICODE_SIZE)) { | |||
| // for now, only do very simple compression (only compress text which is | |||
| // all ascii text) | |||
+ 7
- 0
src/java/com/healthmarketscience/jackcess/JetFormat.java
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| @@ -235,6 +235,7 @@ public abstract class JetFormat { | |||
| public final int SIZE_LONG_VALUE_DEF; | |||
| public final int MAX_INLINE_LONG_VALUE_SIZE; | |||
| public final int MAX_LONG_VALUE_ROW_SIZE; | |||
| public final int MAX_COMPRESSED_UNICODE_SIZE; | |||
| public final int SIZE_TDEF_HEADER; | |||
| public final int SIZE_TDEF_TRAILER; | |||
| public final int SIZE_COLUMN_DEF_BLOCK; | |||
| @@ -368,6 +369,7 @@ public abstract class JetFormat { | |||
| SIZE_LONG_VALUE_DEF = defineSizeLongValueDef(); | |||
| MAX_INLINE_LONG_VALUE_SIZE = defineMaxInlineLongValueSize(); | |||
| MAX_LONG_VALUE_ROW_SIZE = defineMaxLongValueRowSize(); | |||
| MAX_COMPRESSED_UNICODE_SIZE = defineMaxCompressedUnicodeSize(); | |||
| SIZE_TDEF_HEADER = defineSizeTdefHeader(); | |||
| SIZE_TDEF_TRAILER = defineSizeTdefTrailer(); | |||
| SIZE_COLUMN_DEF_BLOCK = defineSizeColumnDefBlock(); | |||
| @@ -469,6 +471,7 @@ public abstract class JetFormat { | |||
| protected abstract int defineSizeLongValueDef(); | |||
| protected abstract int defineMaxInlineLongValueSize(); | |||
| protected abstract int defineMaxLongValueRowSize(); | |||
| protected abstract int defineMaxCompressedUnicodeSize(); | |||
| protected abstract int defineSizeTdefHeader(); | |||
| protected abstract int defineSizeTdefTrailer(); | |||
| protected abstract int defineSizeColumnDefBlock(); | |||
| @@ -657,6 +660,8 @@ public abstract class JetFormat { | |||
| @Override | |||
| protected int defineMaxLongValueRowSize() { return 2032; } | |||
| @Override | |||
| protected int defineMaxCompressedUnicodeSize() { return 1024; } | |||
| @Override | |||
| protected int defineSizeTdefHeader() { return 63; } | |||
| @Override | |||
| protected int defineSizeTdefTrailer() { return 2; } | |||
| @@ -875,6 +880,8 @@ public abstract class JetFormat { | |||
| @Override | |||
| protected int defineMaxLongValueRowSize() { return 4076; } | |||
| @Override | |||
| protected int defineMaxCompressedUnicodeSize() { return 1024; } | |||
| @Override | |||
| protected int defineSizeTdefHeader() { return 63; } | |||
| @Override | |||
| protected int defineSizeTdefTrailer() { return 2; } | |||
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