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A multipurpose java library
package gate.lang.property;
import gate.constraint.Constraint;
import gate.converter.Converter;
import gate.error.NoSuchPropertyError;
import gate.icon.Icon;
import gate.icon.Icons;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.lang.reflect.Type;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Collectors;
public class Property
{
private final String string;
private final Class owner;
private final Attribute lastAttribute;
private final List attributes;
private final static Map, Map> PROPERTIES
= new ConcurrentHashMap<>();
Property(Class owner, String string, List attributes)
{
this.owner = owner;
this.string = string;
this.attributes = Collections.unmodifiableList(attributes);
this.lastAttribute = attributes.get(attributes.size() - 1);
}
/**
* Selects a property from the specified java class.
*
* @param type java class whose property is to be selected
* @param name name of the property to be selected
*
* @return the requested property object or null if there is no property with the specified name on the specified type
*/
public static Property parse(Class type, String name)
{
return PROPERTIES
.computeIfAbsent(type, k -> new ConcurrentHashMap<>())
.computeIfAbsent(name, k -> new PropertyParser(type, k).parse());
}
/**
* Selects a property from the specified type.
*
* @param type type whose property is to be selected
* @param name name of the property to be selected
*
* @return the requested property object
*
* @throws NoSuchPropertyError if there is no property with the specified name on the specified type
*/
public static Property getProperty(Class type, String name)
{
Property property = parse(type, name);
if (property == null)
throw new NoSuchPropertyError(type, name);
return property;
}
/**
* Selects all first level properties of the specified java class.
*
* @param type java class whose properties are to be selected
*
* @return all first level properties of the specified java class
*/
public static List getProperties(Class type)
{
List properties = new ArrayList<>();
while (type != null)
{
for (Field field : type.getDeclaredFields())
if (!Modifier.isTransient(field.getModifiers())
&& !Modifier.isStatic(field.getModifiers()))
properties.add(Property.getProperty(type, field.getName()));
type = type.getSuperclass();
}
return properties;
}
/**
* Selects a list of properties from the specified java class.
*
* @param type java class whose properties are to be selected
* @param names names of the properties to be selected
*
* @return the requested properties
*
* @throws NoSuchPropertyError if there is no property with any of the specified names on the specified java class
*/
public static List getProperties(Class type, String... names)
{
return getProperties(type, Arrays.asList(names));
}
/**
* Selects a list of properties from the specified java class.
*
* @param type java class whose properties are to be selected
* @param names names of the properties to be selected
*
* @return the requested properties
*
* @throws NoSuchPropertyError if there is no property with any of the specified names on the specified java class
*/
public static List getProperties(Class type, List names)
{
return names
.stream()
.map(e -> getProperty(type, e))
.collect(Collectors.toList());
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*/
public Object getValue(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return object;
}
/**
* Updates the property value of the specified object.
*
* @param object object whose value is to be updated
* @param value the new value
*/
public void setValue(Object object, Object value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setValue(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a boolean value
*/
public boolean getBoolean(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getBoolean(object);
}
/**
* Updates the property value of the specified boolean value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a boolean value
*/
public void setBoolean(Object object, boolean value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setBoolean(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a char value
*/
public char getChar(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getChar(object);
}
/**
* Updates the property value of the specified char value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a char value
*/
public void setChar(Object object, char value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setChar(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a byte value
*/
public byte getByte(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getByte(object);
}
/**
* Updates the property value of the specified byte value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a byte value
*/
public void setByte(Object object, byte value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setByte(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a short value
*/
public short getShort(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getShort(object);
}
/**
* Updates the property value of the specified short value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a short value
*/
public void setShort(Object object, short value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setShort(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with an int value
*/
public int getInt(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getInt(object);
}
/**
* Updates the property value of the specified int value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with an int value
*/
public void setInt(Object object, int value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setInt(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a long value
*/
public long getLong(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getLong(object);
}
/**
* Updates the property value of the specified long value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a long value
*/
public void setLong(Object object, long value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setLong(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a float value
*/
public float getFloat(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getFloat(object);
}
/**
* Updates the property value of the specified float value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a float value
*/
public void setFloat(Object object, float value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setFloat(object, value);
}
/**
* Reads the property value from the specified object.
*
* @param object object whose value is to be read
*
* @return the requested value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a double value
*/
public double getDouble(Object object)
{
for (int i = 0; i < attributes.size() && object != null; i++)
object = attributes.get(i).getValue(object);
return attributes.get(attributes.size() - 1).getDouble(object);
}
/**
* Updates the property value of the specified double value.
*
* @param object object whose value is to be updated
* @param value the new value
*
* @throws java.lang.UnsupportedOperationException if the property is not compatible with a double value
*/
public void setDouble(Object object, double value)
{
for (int i = 0; i < attributes.size() - 1; i++)
object = attributes.get(i).forceValue(object);
attributes.get(attributes.size() - 1).setDouble(object, value);
}
/**
* Checks if the specified object has a value for this property.
*
* @param object object to be checked
*
* @return true if there is a value for this property or false otherwise
*/
public boolean isEmpty(Object object)
{
return getValue(object) == null;
}
/**
* Gets a list of all constraints defined for this property.
*
* @return a list of all constraints defined for this property
* @see gate.constraint.Constraint
*/
public Collection getConstraints()
{
return lastAttribute.getConstraints();
}
public String getColor()
{
return lastAttribute.getColor();
}
public Icon getIcon()
{
return lastAttribute.getIcon();
}
public String getDisplayName()
{
return lastAttribute.getDisplayName();
}
public String getDescription()
{
return lastAttribute.getDescription();
}
public String getTooltip()
{
return lastAttribute.getTooltip();
}
public String getPlaceholder()
{
return lastAttribute.getPlaceholder();
}
public String getMask()
{
return lastAttribute.getMask();
}
public Class getRawType()
{
return lastAttribute.getRawType();
}
public Type getType()
{
return lastAttribute.getGenericType();
}
public Class getOwner()
{
return owner;
}
public Type getElementType()
{
return lastAttribute.getElementType();
}
public Class getElementRawType()
{
return lastAttribute.getElementRawType();
}
public List getAttributes()
{
return Collections.unmodifiableList(attributes);
}
public boolean isEntityId()
{
return getAttributes().size() == 2
&& getAttributes().get(1).isEntityId();
}
public static Object getValue(Object object, String name)
{
return object != null
? Property.getProperty(object.getClass(), name)
.getValue(object) : null;
}
public Converter getConverter()
{
return lastAttribute.getConverter();
}
public Attribute getLastAttribute()
{
return lastAttribute;
}
public Property getPreviousProperty()
{
StringBuilder builder = new StringBuilder();
for (int i = 0; i < attributes.size() - 1; i++)
{
if (!(attributes.get(i) instanceof SelfAttribute))
{
if (builder.length() > 0
&& attributes.get(i) instanceof JavaIdentifierAttribute)
builder.append(".");
builder.append(attributes.get(i).toString());
}
}
return new Property(owner, builder.toString(), attributes.subList(0, attributes.size() - 1));
}
public String getColumnName()
{
return getAttributes().stream().map(Attribute::getColumnName)
.filter(Objects::nonNull).collect(Collectors.joining("$"));
}
@Override
public boolean equals(Object object)
{
return object instanceof Property
&& object == this;
}
@Override
public int hashCode()
{
return toString().hashCode();
}
@Override
public String toString()
{
return string;
}
}
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