com.draagon.meta.util.Converter Maven / Gradle / Ivy
package com.draagon.meta.util;
import java.util.Date;
import com.draagon.meta.field.MetaFieldTypes;
/**
* Util class to convert from one data type to another
*
* @author Douglas Mealing
*/
public final class Converter
{
/**
* Private constructor
*/
private Converter()
{
} // Converter
public static Object toType( int type, Object val ) {
switch( type ) {
case MetaFieldTypes.BOOLEAN: return toBoolean( val );
case MetaFieldTypes.BYTE: return toByte( val );
case MetaFieldTypes.SHORT: return toShort( val );
case MetaFieldTypes.INT: return toInt( val );
case MetaFieldTypes.LONG: return toLong( val );
case MetaFieldTypes.FLOAT: return toFloat( val );
case MetaFieldTypes.DOUBLE: return toDouble( val );
case MetaFieldTypes.STRING: return toString( val );
case MetaFieldTypes.DATE: return toDate( val );
case MetaFieldTypes.OBJECT: return val;
}
return val;
}
/**
* Converts the object value to double value
*
* @param val Value
* @return Double value
*/
public static Boolean toBoolean( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
return (Boolean) val;
}
else if ( val instanceof Byte ) {
if ( ((Byte) val ).byteValue() != 0 ) return new Boolean( true );
}
else if ( val instanceof Short ) {
if ( ((Short) val ).shortValue() != 0 ) return new Boolean( true );
}
else if ( val instanceof Integer ) {
if ( ((Integer) val ).intValue() != 0 ) return new Boolean( true );
}
else if ( val instanceof Long ) {
if ( ((Long) val ).longValue() != 0 ) return new Boolean( true );
}
else if ( val instanceof Float ) {
if ( ((Float) val ).floatValue() != 0 ) return new Boolean( true );
}
else if ( val instanceof Double ) {
if ( ((Double) val ).doubleValue() != 0 ) return new Boolean( true );
}
else if ( val instanceof String ) {
if ( val.toString().length() > 0 && ( val.toString().charAt( 0 ) == 't'
|| val.toString().charAt( 0 ) == 'T' )) return new Boolean( true );
}
else if ( val instanceof Date ) {
if ( ((Date) val ).getTime() == 0 ) return new Boolean( false );
else return new Boolean( true );
}
else if ( val instanceof Object ) {
if ( val.toString().length() > 0 && ( val.toString().charAt( 0 ) == 't'
|| val.toString().charAt( 0 ) == 'T' )) return new Boolean( true );
}
return new Boolean( false );
} // toDouble
/**
* Converts the object value to double value
*
* @param val Value
* @return Double value
*/
public static Double toDouble( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
if ( ((Boolean) val ).booleanValue() ) return new Double( 1.0 );
}
else if ( val instanceof Byte ) {
return new Double( (double) ((Byte) val ).byteValue() );
}
else if ( val instanceof Short ) {
return new Double( (double) ((Short) val ).shortValue() );
}
else if ( val instanceof Integer ) {
return new Double( (double) ((Integer) val ).intValue() );
}
else if ( val instanceof Long ) {
return new Double( (double) ((Long) val ).longValue() );
}
else if ( val instanceof Float ) {
return new Double( (double) ((Float) val ).floatValue() );
}
else if ( val instanceof Double ) {
return (Double) val;
}
else if ( val instanceof String ) {
try { return new Double( Double.parseDouble( (String) val )); } catch( Exception e ) {}
}
else if ( val instanceof Date ) {
return new Double( (double) ((Date) val ).getTime() );
}
else if ( val instanceof Object ) {
try { return new Double( Double.parseDouble( val.toString() )); } catch( Exception e ) {}
}
return new Double( 0.0 );
} // toDouble
/**
* Converts the object value to Float value
*
* @param val Value
* @return Float value
*/
public static Float toFloat( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
if ( ((Boolean) val ).booleanValue() ) return new Float( 1 );
}
else if ( val instanceof Byte ) {
return new Float( (float) ((Byte) val ).byteValue() );
}
else if ( val instanceof Short ) {
return new Float( (float) ((Short) val ).shortValue() );
}
else if ( val instanceof Integer ) {
return new Float( (float) ((Integer) val ).intValue() );
}
else if ( val instanceof Long ) {
return new Float( (float) ((Long) val ).longValue() );
}
else if ( val instanceof Float ) {
return (Float) val;
}
else if ( val instanceof Double ) {
return new Float( (float) ((Double) val ).doubleValue() );
}
else if ( val instanceof String ) {
try { return new Float( Float.parseFloat( (String) val )); } catch( Exception e ) {}
}
else if ( val instanceof Date ) {
return new Float( (float) ((Date) val ).getTime() );
}
else if ( val instanceof Object ) {
try { return new Float( Float.parseFloat( val.toString() )); } catch( Exception e ) {}
}
return new Float( 0 );
} // toFloat
/**
* Converts the object value to Long value
*
* @param val Value
* @return Long value
*/
public static Long toLong( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
if ( ((Boolean) val ).booleanValue() ) return new Long( 1 );
}
else if ( val instanceof Byte ) {
return new Long( (long) ((Byte) val ).byteValue() );
}
else if ( val instanceof Short ) {
return new Long( (long) ((Short) val ).shortValue() );
}
else if ( val instanceof Integer ) {
return new Long( (long) ((Integer) val ).intValue() );
}
else if ( val instanceof Long ) {
return (Long) val;
}
else if ( val instanceof Float ) {
return new Long( (long) ((Float) val ).floatValue() );
}
else if ( val instanceof Double ) {
return new Long( (long) ((Double) val ).doubleValue() );
}
else if ( val instanceof String ) {
try { return new Long( Long.parseLong( (String) val )); } catch( Exception e ) {}
}
else if ( val instanceof Date ) {
return new Long( ((Date) val ).getTime() );
}
else if ( val instanceof Object ) {
try { return new Long( Long.parseLong( val.toString() )); } catch( Exception e ) {}
}
return new Long( 0 );
} // toLong
/**
* Converts the object value to Integer value
*
* @param val Value
* @return Integer Value
*/
public static Integer toInt( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
if ( ((Boolean) val ).booleanValue() ) return new Integer( 1 );
}
else if ( val instanceof Byte ) {
return new Integer( (int) ((Byte) val ).byteValue() );
}
else if ( val instanceof Short ) {
return new Integer( (int) ((Short) val ).shortValue() );
}
else if ( val instanceof Integer ) {
return (Integer) val;
}
else if ( val instanceof Long ) {
return new Integer( (int) ((Long) val ).longValue() );
}
else if ( val instanceof Float ) {
return new Integer( (int) ((Float) val ).floatValue() );
}
else if ( val instanceof Double ) {
return new Integer( (int) ((Double) val ).doubleValue() );
}
else if ( val instanceof String ) {
try { return new Integer( Integer.parseInt( (String) val )); } catch( Exception e ) {}
}
else if ( val instanceof Date ) {
return new Integer( (int) ((Date) val ).getTime() );
}
else if ( val instanceof Object ) {
try { return new Integer( Integer.parseInt( val.toString() )); } catch( Exception e ) {}
}
return new Integer( 0 );
} // toInt
/**
* Convert the object value to short value
*
* @param val Value
* @return Short value
*/
public static Short toShort( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
if ( ((Boolean) val ).booleanValue() ) return new Short( (short)1 );
}
else if ( val instanceof Byte ) {
return new Short( (short) ((Byte) val ).shortValue() );
}
else if ( val instanceof Short ) {
return (Short) val;
}
else if ( val instanceof Integer ) {
return new Short( (short) ((Integer) val ).intValue() );
}
else if ( val instanceof Long ) {
return new Short( (short) ((Long) val ).longValue() );
}
else if ( val instanceof Float ) {
return new Short( (short) ((Float) val ).floatValue() );
}
else if ( val instanceof Double ) {
return new Short( (short) ((Double) val ).doubleValue() );
}
else if ( val instanceof String ) {
try { return new Short( Short.parseShort( (String) val )); } catch( Exception e ) {}
}
else if ( val instanceof Date ) {
return new Short( (short) ((Date) val ).getTime() );
}
else if ( val instanceof Object ) {
try { return new Short( Short.parseShort( val.toString() )); } catch( Exception e ) {}
}
return new Short( (short)0 );
} // toShort
/**
* Convert the object value to byte value
*
* @param val Value
* @return Short value
*/
public static Byte toByte( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
if ( ((Boolean) val ).booleanValue() ) return new Byte( (byte)1 );
}
else if ( val instanceof Byte ) {
return (Byte) val;
}
else if ( val instanceof Short ) {
return new Byte( (byte) ((Integer) val ).intValue() );
}
else if ( val instanceof Integer ) {
return new Byte( (byte) ((Integer) val ).intValue() );
}
else if ( val instanceof Long ) {
return new Byte( (byte) ((Long) val ).longValue() );
}
else if ( val instanceof Float ) {
return new Byte( (byte) ((Float) val ).floatValue() );
}
else if ( val instanceof Double ) {
return new Byte( (byte) ((Double) val ).doubleValue() );
}
else if ( val instanceof String ) {
try { return new Byte( Byte.parseByte( (String) val )); } catch( Exception e ) {}
}
else if ( val instanceof Date ) {
return new Byte( (byte) ((Date) val ).getTime() );
}
else if ( val instanceof Object ) {
try { return new Byte( Byte.parseByte( val.toString() )); } catch( Exception e ) {}
}
return new Byte( (byte)0 );
} // toByte
/**
* Convert the object value to byte value
*
* @param val Value
* @return Short value
*/
public static String toString( Object val )
{
if ( val == null ) return null;
if ( val instanceof Date ) {
return "" + ((Date) val ).getTime();
}
return val.toString();
} // toString
/**
* Convert the object value to Date value
*
* @param val Value
* @return Short value
*/
public static Date toDate( Object val )
{
if ( val == null ) return null;
if ( val instanceof Boolean ) {
if ( ((Boolean) val ).booleanValue() ) return new Date();
else return new Date( 0 );
}
else if ( val instanceof Byte ) {
return new Date( (long) ((Byte) val ).byteValue() );
}
else if ( val instanceof Short ) {
return new Date( (long) ((Short) val ).shortValue() );
}
else if ( val instanceof Integer ) {
return new Date( (long) ((Integer) val ).intValue() );
}
else if ( val instanceof Long ) {
return new Date( (long) ((Long) val ).longValue() );
}
else if ( val instanceof Float ) {
return new Date( (long) ((Float) val ).floatValue() );
}
else if ( val instanceof Double ) {
return new Date( (long) ((Double) val ).doubleValue() );
}
else if ( val instanceof String ) {
try { return new Date( Long.parseLong( (String) val )); } catch( Exception e ) {}
}
else if ( val instanceof Date ) {
return (Date) val;
}
// Catch anything else
try { return new Date( Long.parseLong( val.toString() )); }
catch( Exception e ) { return new Date( 0 ); }
} // toDate
} // Converter
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