org.knime.core.data.def
Class StringCell

java.lang.Object
  extended by org.knime.core.data.DataCell
      extended by org.knime.core.data.def.StringCell
All Implemented Interfaces:
Serializable, DataValue, NominalValue, StringValue

public final class StringCell
extends DataCell
implements StringValue, NominalValue

A data cell implementation holding a string value by storing this value in a private String member.

Author:
Michael Berthold, University of Konstanz
See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from interface org.knime.core.data.StringValue
StringValue.StringUtilityFactory
 
Nested classes/interfaces inherited from interface org.knime.core.data.DataValue
DataValue.UtilityFactory
 
Field Summary
static DataType TYPE
          Convenience access member for DataType.getType(StringCell.class).
 
Fields inherited from interface org.knime.core.data.StringValue
UTILITY
 
Fields inherited from interface org.knime.core.data.NominalValue
UTILITY
 
Constructor Summary
StringCell(String str)
          Creates a new String Cell based on the given String value.
 
Method Summary
protected  boolean equalsDataCell(DataCell dc)
          Derived classes implement their specific equals function here.
static org.knime.core.data.def.StringCell.StringSerializer getCellSerializer()
          Returns the factory to read/write DataCells of this class from/to a DataInput/DataOutput.
static Class<? extends DataValue> getPreferredValueClass()
          Returns the preferred value class of this cell implementation.
 String getStringValue()
          
 int hashCode()
          This method must be implemented in order to ensure that two equal DataCell objects return the same hash code.
 String toString()
          Returns the String representation of this cell's value.
 
Methods inherited from class org.knime.core.data.DataCell
equals, getType, isMissing
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

TYPE

public static final DataType TYPE
Convenience access member for DataType.getType(StringCell.class).

See Also:
DataType.getType(Class)
Constructor Detail

StringCell

public StringCell(String str)
Creates a new String Cell based on the given String value.

Parameters:
str - The String value to store.
Throws:
NullPointerException - If the given String value is null.
Method Detail

getPreferredValueClass

public static final Class<? extends DataValue> getPreferredValueClass()
Returns the preferred value class of this cell implementation. This method is called per reflection to determine which is the preferred renderer, comparator, etc.

Returns:
StringValue.class;

getCellSerializer

public static final org.knime.core.data.def.StringCell.StringSerializer getCellSerializer()
Returns the factory to read/write DataCells of this class from/to a DataInput/DataOutput. This method is called via reflection.

Returns:
A serializer for reading/writing cells of this kind.
See Also:
DataCell

getStringValue

public String getStringValue()

Specified by:
getStringValue in interface StringValue
Returns:
A String value.

toString

public String toString()
Returns the String representation of this cell's value.

Specified by:
toString in class DataCell
Returns:
a String representation of this cell's value

equalsDataCell

protected boolean equalsDataCell(DataCell dc)
Derived classes implement their specific equals function here. The argument is guaranteed to be not null or a missing value, to be of the same class like this.

Specified by:
equalsDataCell in class DataCell
Parameters:
dc - the cell to compare this to
Returns:
true if this is equal to the argument, false if not

hashCode

public int hashCode()
This method must be implemented in order to ensure that two equal DataCell objects return the same hash code.

Specified by:
hashCode in class DataCell
Returns:
the hash code of your specific DataCell
See Also:
Object.hashCode(), DataCell.equals(java.lang.Object)


Copyright, 2003 - 2010. All rights reserved.
University of Konstanz, Germany.
Chair for Bioinformatics and Information Mining, Prof. Dr. Michael R. Berthold.
You may not modify, publish, transmit, transfer or sell, reproduce, create derivative works from, distribute, perform, display, or in any way exploit any of the content, in whole or in part, except as otherwise expressly permitted in writing by the copyright owner or as specified in the license file distributed with this product.