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h2database
提交 4675d719 authored 作者: Noel Grandin's avatar Noel Grandin
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document ValueLob.type a little

上级 d4ed1a5d
隐藏空白字符变更
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正在显示 包含 26 行增加 和 23 行删除
h2/src/main/org/h2/value/ValueLob.java
浏览文件 @ 4675d719
......@@ -109,7 +109,10 @@ public class ValueLob extends Value {
*/
private static int dirCounter;
private final int type;
/**
* either Value.BLOB or Value.CLOB
*/
private final int valueType;
private long precision;
private DataHandler handler;
private int tableId;
......@@ -124,7 +127,7 @@ public class ValueLob extends Value {
private ValueLob(int type, DataHandler handler, String fileName,
int tableId, int objectId, boolean linked, long precision,
boolean compressed) {
this.type = type;
this.valueType = type;
this.handler = handler;
this.fileName = fileName;
this.tableId = tableId;
......@@ -135,7 +138,7 @@ public class ValueLob extends Value {
}
private ValueLob(int type, byte[] small) {
this.type = type;
this.valueType = type;
this.small = small;
if (small != null) {
if (type == Value.BLOB) {
......@@ -147,7 +150,7 @@ public class ValueLob extends Value {
}
private static ValueLob copy(ValueLob lob) {
ValueLob copy = new ValueLob(lob.type, lob.handler, lob.fileName,
ValueLob copy = new ValueLob(lob.valueType, lob.handler, lob.fileName,
lob.tableId, lob.objectId, lob.linked, lob.precision, lob.compressed);
copy.small = lob.small;
copy.hash = lob.hash;
......@@ -178,7 +181,7 @@ public class ValueLob extends Value {
/**
* Create a LOB value with the given parameters.
*
* @param type the data type
* @param type the data type, either Value.BLOB or Value.CLOB
* @param handler the file handler
* @param tableId the table object id
* @param objectId the object id
......@@ -196,7 +199,7 @@ public class ValueLob extends Value {
/**
* Create a LOB value with the given parameters.
*
* @param type the data type
* @param type the data type, either Value.BLOB or Value.CLOB
* @param handler the file handler
* @param tableId the table object id
* @param objectId the object id
......@@ -454,7 +457,7 @@ public class ValueLob extends Value {
this.precision = 0;
this.small = null;
this.hash = 0;
String compressionAlgorithm = h.getLobCompressionAlgorithm(type);
String compressionAlgorithm = h.getLobCompressionAlgorithm(valueType);
this.compressed = compressionAlgorithm != null;
synchronized (h) {
String path = h.getDatabasePath();
......@@ -507,7 +510,7 @@ public class ValueLob extends Value {
*/
@Override
public Value convertTo(int t, int precision, Mode mode, Object column, String[] enumerators) {
if (t == type) {
if (t == valueType) {
return this;
} else if (t == Value.CLOB) {
return ValueLob.createClob(getReader(), -1, handler);
......@@ -593,7 +596,7 @@ public class ValueLob extends Value {
@Override
public int getType() {
return type;
return valueType;
}
@Override
......@@ -606,7 +609,7 @@ public class ValueLob extends Value {
int len = precision > Integer.MAX_VALUE || precision == 0 ?
Integer.MAX_VALUE : (int) precision;
try {
if (type == Value.CLOB) {
if (valueType == Value.CLOB) {
if (small != null) {
return new String(small, StandardCharsets.UTF_8);
}
......@@ -626,7 +629,7 @@ public class ValueLob extends Value {
@Override
public byte[] getBytes() {
if (type == CLOB) {
if (valueType == CLOB) {
// convert hex to string
return super.getBytes();
}
......@@ -636,7 +639,7 @@ public class ValueLob extends Value {
@Override
public byte[] getBytesNoCopy() {
if (type == CLOB) {
if (valueType == CLOB) {
// convert hex to string
return super.getBytesNoCopy();
}
......@@ -659,7 +662,7 @@ public class ValueLob extends Value {
// it in the database file
return (int) (precision ^ (precision >>> 32));
}
if (type == CLOB) {
if (valueType == CLOB) {
hash = getString().hashCode();
} else {
hash = Utils.getByteArrayHash(getBytes());
......@@ -670,7 +673,7 @@ public class ValueLob extends Value {
@Override
protected int compareSecure(Value v, CompareMode mode) {
if (type == Value.CLOB) {
if (valueType == Value.CLOB) {
return Integer.signum(getString().compareTo(v.getString()));
}
byte[] v2 = v.getBytesNoCopy();
......@@ -679,7 +682,7 @@ public class ValueLob extends Value {
@Override
public Object getObject() {
if (type == Value.CLOB) {
if (valueType == Value.CLOB) {
return getReader();
}
return getInputStream();
......@@ -692,7 +695,7 @@ public class ValueLob extends Value {
@Override
public Reader getReader(long oneBasedOffset, long length) {
return rangeReader(getReader(), oneBasedOffset, length, type == Value.CLOB ? precision : -1);
return rangeReader(getReader(), oneBasedOffset, length, valueType == Value.CLOB ? precision : -1);
}
@Override
......@@ -727,7 +730,7 @@ public class ValueLob extends Value {
if (p > Integer.MAX_VALUE || p <= 0) {
p = -1;
}
if (type == Value.BLOB) {
if (valueType == Value.BLOB) {
prep.setBinaryStream(parameterIndex, getInputStream(), (int) p);
} else {
prep.setCharacterStream(parameterIndex, getReader(), (int) p);
......@@ -737,7 +740,7 @@ public class ValueLob extends Value {
@Override
public String getSQL() {
String s;
if (type == Value.CLOB) {
if (valueType == Value.CLOB) {
s = getString();
return StringUtils.quoteStringSQL(s);
}
......@@ -752,7 +755,7 @@ public class ValueLob extends Value {
return getSQL();
}
StringBuilder buff = new StringBuilder();
if (type == Value.CLOB) {
if (valueType == Value.CLOB) {
buff.append("SPACE(").append(getPrecision());
} else {
buff.append("CAST(REPEAT('00', ").append(getPrecision()).append(") AS BINARY");
......@@ -790,10 +793,10 @@ public class ValueLob extends Value {
public void convertToFileIfRequired(DataHandler h) {
try {
if (small != null && small.length > h.getMaxLengthInplaceLob()) {
boolean compress = h.getLobCompressionAlgorithm(type) != null;
boolean compress = h.getLobCompressionAlgorithm(valueType) != null;
int len = getBufferSize(h, compress, Long.MAX_VALUE);
int tabId = tableId;
if (type == Value.BLOB) {
if (valueType == Value.BLOB) {
createFromStream(
Utils.newBytes(len), 0, getInputStream(), Long.MAX_VALUE, h);
} else {
......@@ -863,7 +866,7 @@ public class ValueLob extends Value {
@Override
public ValueLob copyToTemp() {
ValueLob lob;
if (type == CLOB) {
if (valueType == CLOB) {
lob = ValueLob.createClob(getReader(), precision, handler);
} else {
lob = ValueLob.createBlob(getInputStream(), precision, handler);
......@@ -877,7 +880,7 @@ public class ValueLob extends Value {
return this;
}
ValueLob lob;
if (type == CLOB) {
if (valueType == CLOB) {
lob = ValueLob.createClob(getReader(), precision, handler);
} else {
lob = ValueLob.createBlob(getInputStream(), precision, handler);
......
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