org.h2.value
Class ValueString

java.lang.Object
  extended by org.h2.value.Value
      extended by org.h2.value.ValueString
Direct Known Subclasses:
ValueStringFixed, ValueStringIgnoreCase

public class ValueString
extends Value

Implementation of the VARCHAR data type. It is also the base class for other ValueString* classes.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.h2.value.Value
Value.ValueBlob, Value.ValueClob
 
Field Summary
protected  java.lang.String value
          The string data.
 
Fields inherited from class org.h2.value.Value
ARRAY, BLOB, BOOLEAN, BYTE, BYTES, CLOB, DATE, DECIMAL, DOUBLE, FLOAT, INT, JAVA_OBJECT, LONG, NULL, RESULT_SET, SHORT, STRING, STRING_FIXED, STRING_IGNORECASE, TIME, TIMESTAMP, TYPE_COUNT, UNKNOWN, UUID
 
Constructor Summary
protected ValueString(java.lang.String value)
           
 
Method Summary
protected  int compareSecure(Value o, CompareMode mode)
          Compare the value with another value of the same type.
 Value convertPrecision(long precision)
          Convert the precision to the requested value.
 boolean equals(java.lang.Object other)
          Check if the two values have the same hash code.
static ValueString get(java.lang.String s)
          Get or create a string value for the given string.
 int getDisplaySize()
          Get the display size in characters.
 int getMemory()
          Get the memory used by this object.
protected  Value getNew(java.lang.String s)
          Create a new String value of the current class.
 java.lang.Object getObject()
          Get the value as an object.
 long getPrecision()
          Get the precision.
 java.lang.String getSQL()
          Get the SQL expression for this value.
 java.lang.String getString()
          Get the value as a string.
 int getType()
          Get the value type.
 int hashCode()
           
 void set(java.sql.PreparedStatement prep, int parameterIndex)
          Set the value as a parameter in a prepared statement.
 
Methods inherited from class org.h2.value.Value
add, checkPrecision, clearCache, close, compareTo, compareTypeSave, convertScale, convertTo, copyToTemp, divide, getBigDecimal, getBoolean, getByte, getBytes, getBytesNoCopy, getDate, getDateNoCopy, getDouble, getFloat, getHigherOrder, getInputStream, getInt, getLong, getReader, getScale, getShort, getSignum, getSmall, getTableId, getTime, getTimeNoCopy, getTimestamp, getTimestampNoCopy, getTraceSQL, isFileBased, isLinked, link, multiply, negate, subtract, throwUnsupportedExceptionForType, toString, unlink
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

value

protected final java.lang.String value
The string data.

Constructor Detail

ValueString

protected ValueString(java.lang.String value)
Method Detail

getSQL

public java.lang.String getSQL()
Description copied from class: Value
Get the SQL expression for this value.

Specified by:
getSQL in class Value
Returns:
the SQL expression

equals

public boolean equals(java.lang.Object other)
Description copied from class: Value
Check if the two values have the same hash code. No data conversion is made; this method returns false if the other object is not of the same class. For some values, compareTo may return 0 even if equals return false. Example: ValueDecimal 0.0 and 0.00.

Specified by:
equals in class Value
Parameters:
other - the other value
Returns:
true if they are equal

compareSecure

protected int compareSecure(Value o,
                            CompareMode mode)
Description copied from class: Value
Compare the value with another value of the same type.

Specified by:
compareSecure in class Value
Parameters:
o - the other value
mode - the compare mode
Returns:
0 if both values are equal, -1 if the other value is smaller, and 1 otherwise

getString

public java.lang.String getString()
Description copied from class: Value
Get the value as a string.

Specified by:
getString in class Value
Returns:
the string

getPrecision

public long getPrecision()
Description copied from class: Value
Get the precision.

Specified by:
getPrecision in class Value
Returns:
the precision

getObject

public java.lang.Object getObject()
Description copied from class: Value
Get the value as an object.

Specified by:
getObject in class Value
Returns:
the object

set

public void set(java.sql.PreparedStatement prep,
                int parameterIndex)
         throws java.sql.SQLException
Description copied from class: Value
Set the value as a parameter in a prepared statement.

Specified by:
set in class Value
Parameters:
prep - the prepared statement
parameterIndex - the parameter index
Throws:
java.sql.SQLException

getDisplaySize

public int getDisplaySize()
Description copied from class: Value
Get the display size in characters.

Specified by:
getDisplaySize in class Value
Returns:
the display size

getMemory

public int getMemory()
Description copied from class: Value
Get the memory used by this object.

Overrides:
getMemory in class Value
Returns:
the memory used in bytes

convertPrecision

public Value convertPrecision(long precision)
Description copied from class: Value
Convert the precision to the requested value.

Overrides:
convertPrecision in class Value
Parameters:
precision - the new precision
Returns:
the new value

hashCode

public int hashCode()
Specified by:
hashCode in class Value

getType

public int getType()
Description copied from class: Value
Get the value type.

Specified by:
getType in class Value
Returns:
the type

get

public static ValueString get(java.lang.String s)
Get or create a string value for the given string.

Parameters:
s - the string
Returns:
the value

getNew

protected Value getNew(java.lang.String s)
Create a new String value of the current class. This method is meant to be overridden by subclasses.

Parameters:
s - the string
Returns:
the value