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CharValue.java
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CharValue.java
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/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.values.storable;
import org.neo4j.values.virtual.ListValue;
import static java.lang.String.format;
import static org.neo4j.values.virtual.VirtualValues.list;
public final class CharValue extends TextValue
{
final char value;
CharValue( char value )
{
this.value = value;
}
@Override
public boolean eq( Object other )
{
return other != null && other instanceof Value && equals( (Value) other );
}
@Override
public boolean equals( Value other )
{
return other.equals( value );
}
@Override
public boolean equals( boolean x )
{
return false;
}
@Override
public boolean equals( char x )
{
return value == x;
}
@Override
public boolean equals( String x )
{
return x.length() == 1 && x.charAt( 0 ) == value;
}
@Override
public int computeHash()
{
//The 31 is there to give it the same hash as the string equivalent
return 31 + value;
}
@Override
public <E extends Exception> void writeTo( ValueWriter<E> writer ) throws E
{
writer.writeString( value );
}
@Override
public Object asObjectCopy()
{
return value;
}
@Override
public String prettyPrint()
{
return format( "'%s'", value );
}
@Override
public String stringValue()
{
return Character.toString( value );
}
@Override
public int length()
{
return 1;
}
@Override
public TextValue substring( int start, int length )
{
if ( length != 1 && start != 0 )
{
return StringValue.EMTPY;
}
return this;
}
@Override
public TextValue trim()
{
if ( Character.isWhitespace( value ) )
{
return StringValue.EMTPY;
}
else
{
return this;
}
}
@Override
public TextValue ltrim()
{
return trim();
}
@Override
public TextValue rtrim()
{
return trim();
}
@Override
public TextValue toLower()
{
return new CharValue( Character.toLowerCase( value ) );
}
@Override
public TextValue toUpper()
{
return new CharValue( Character.toUpperCase( value ) );
}
@Override
public ListValue split( String separator )
{
if ( separator.equals( stringValue() ) )
{
return EMPTY_SPLIT;
}
else
{
return list( Values.stringValue( stringValue() ) );
}
}
@Override
public TextValue replace( String find, String replace )
{
assert find != null;
assert replace != null;
if ( stringValue().equals( find ) )
{
return Values.stringValue( replace );
}
else
{
return this;
}
}
@Override
public TextValue reverse()
{
return this;
}
public char value()
{
return value;
}
@Override
public int compareTo( TextValue other )
{
return TextValues.compareCharToString( value, other.stringValue() );
}
@Override
public String toString()
{
return format( "Char('%s')", value );
}
}