MethodCall.java

/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo 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.
 *
 * OpenFlexo 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.foundation.bindings;

import java.util.Vector;
import java.util.logging.Logger;

import org.openflexo.foundation.DataModification;
import org.openflexo.foundation.FlexoModelObject;
import org.openflexo.foundation.FlexoObservable;
import org.openflexo.foundation.TemporaryFlexoModelObject;
import org.openflexo.foundation.dm.DMEntity;
import org.openflexo.foundation.dm.DMMethod;
import org.openflexo.foundation.dm.DMMethod.DMMethodParameter;
import org.openflexo.foundation.dm.DMType;
import org.openflexo.foundation.dm.Typed;
import org.openflexo.foundation.dm.dm.DMEntityClassNameChanged;
import org.openflexo.foundation.dm.dm.EntityDeleted;
import org.openflexo.foundation.rm.XMLStorageResourceData;

public class MethodCall extends FlexoModelObject implements Typed, BindingValue.BindingPathElement {

	static final Logger logger = Logger.getLogger(MethodCall.class.getPackage().getName());

	protected AbstractBinding _owner;
	private DMMethod _method;
	private Vector<MethodCallArgument> _args;

	public MethodCall(AbstractBinding owner) {
		super(owner.getProject());
		_owner = owner;
		_method = null;
		_args = new Vector<MethodCallArgument>();
	}

	public MethodCall(AbstractBinding owner, DMMethod method) {
		this(owner);
		setMethod(method);
	}

	@Override
	public DMType getResultingType() {
		return getType();
	}

	@Override
	public DMType getType() {
		if (_method != null) {
			return _method.getReturnType();
		}
		return null;
	}

	@Override
	public void setType(DMType type) {
		// Not allowed
	}

	@Override
	public DMEntity getEntity() {
		if (_method != null) {
			return _method.getEntity();
		}
		return null;
	}

	@Override
	public String getSerializationRepresentation() {
		if (_method == null) {
			return "null";
		}
		String returned = _method.getName();
		returned += "(";
		boolean isFirst = true;
		if (_method.getParameters() != null) {
			for (MethodCallArgument arg : _args) {
				returned += (isFirst ? "" : ",") + (arg.getBinding() != null ? arg.getBinding().getStringRepresentation() : "");
				isFirst = false;
			}
		}
		returned += ")";
		return returned;
	}

	public String getJavaCodeStringRepresentation() {
		if (_method == null) {
			return "null";
		}
		String returned = _method.getName();
		returned += "(";
		boolean isFirst = true;
		if (_method.getParameters() != null) {
			for (MethodCallArgument arg : _args) {
				returned += (isFirst ? "" : ",") + (arg.getBinding() != null ? arg.getBinding().getJavaCodeStringRepresentation() : "");
				isFirst = false;
			}
		}
		returned += ")";
		return returned;
	}

	public DMMethod getMethod() {
		return _method;
	}

	public void setMethod(DMMethod method) {
		if (method != _method) {
			_method = method;
			_args.clear();
			for (DMMethodParameter param : method.getParameters()) {
				_args.add(new MethodCallArgument(param));
			}
		}
	}

	public class MethodCallParamBindingDefinition extends BindingDefinition {
		private DMMethodParameter _param;

		public MethodCallParamBindingDefinition(DMMethodParameter param) {
			super(param.getName(), param.getType(), _owner, BindingDefinitionType.GET, true);
			_param = param;
		}

		public DMMethodParameter getParam() {
			return _param;
		}
	}

	@Override
	public String getClassNameKey() {
		return "method_call";
	}

	@Override
	public String getFullyQualifiedName() {
		return "METHOD_CALL." + getSerializationRepresentation();
	}

	@Override
	public XMLStorageResourceData getXMLResourceData() {
		if (_owner != null) {
			return _owner.getXMLResourceData();
		}
		return null;
	}

	public Vector<MethodCallArgument> getArgs() {
		return _args;
	}

	/*public AbstractBinding getBindingValueForParam (DMMethod.DMMethodParameter param)
	{
	    return _args.get(param);
	}*/

	public MethodCallArgument argumentForParam(DMMethodParameter param) {
		for (MethodCallArgument arg : _args) {
			if (arg.getParam() == param) {
				return arg;
			}
		}
		return null;
	}

	public void setBindingValueForParam(AbstractBinding binding, DMMethodParameter param) {
		MethodCallArgument arg = argumentForParam(param);

		if (arg == null) {
			logger.warning("Could not find argument matching param " + param);
			return;
		} else {
			binding.setOwner(_owner);
			binding.setBindingDefinition(arg.getBindingDefinition());
			arg.setBinding(binding);
		}
	}

	@Override
	public boolean isBindingValid() {
		for (MethodCallArgument arg : _args) {
			if (arg.getBinding() == null || !arg.getBinding().isBindingValid()) {
				return false;
			}
		}
		return true;
	}

	/**
	 * Overrides getCardinality
	 * 
	 * @see org.openflexo.foundation.bindings.BindingValue.BindingPathElement#getCardinality()
	 */
	/*public DMCardinality getCardinality()
	{
	    if (getType()!=null && (getType().getName().equals("Vector") || getType().getName().equals("NSArray")))
	        return DMCardinality.VECTOR;
	    return DMCardinality.SINGLE;
	}*/

	@Override
	public void update(FlexoObservable observable, DataModification dataModification) {
		if (dataModification instanceof DMEntityClassNameChanged && observable == getType().getBaseEntity()) {
			// do nothing : no cached code
		} else if (dataModification instanceof EntityDeleted && observable == getType().getBaseEntity()) {
			// do nothing : no cached code
		}
	}

	public class MethodCallArgument extends TemporaryFlexoModelObject implements Typed {
		private DMMethodParameter param;
		private MethodCallParamBindingDefinition bindingDefinition;
		private AbstractBinding binding;

		protected MethodCallArgument(DMMethodParameter aParam) {
			param = aParam;
			bindingDefinition = new MethodCallParamBindingDefinition(param);
			binding = null;
		}

		@Override
		public DMType getType() {
			return bindingDefinition.getType();
		}

		@Override
		public void setType(DMType type) {
			// Not applicable
		}

		@Override
		public void update(FlexoObservable observable, DataModification dataModification) {
			// TODO: implements type updating !!!!
		}

		public AbstractBinding getBinding() {
			return binding;
		}

		public void setBinding(AbstractBinding aBinding) {
			this.binding = aBinding;
		}

		public MethodCallParamBindingDefinition getBindingDefinition() {
			return bindingDefinition;
		}

		public DMMethodParameter getParam() {
			return param;
		}

		@Override
		public String toString() {
			return "MethodCallArg:" + param.getName() + "/" + Integer.toHexString(hashCode());
		}
	}

}