package org.springframework.roo.classpath.layers;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.lang3.Validate;
import org.apache.commons.lang3.tuple.MutablePair;
import org.springframework.roo.model.JavaSymbolName;
import org.springframework.roo.model.JavaType;
/**
* A parameter being passed to a layer method.
*
* @author Andrew Swan
* @since 1.2.0
*/
public class MethodParameter extends MutablePair<JavaType, JavaSymbolName> {
private static final long serialVersionUID = -3652851128787182692L;
/**
* Converts the given list of pairs to a list of {@link MethodParameter}s
*
* @param parameters the pairs to convert (can be <code>null</code>)
* @return
*/
public static List<MethodParameter> asList(
final List<MutablePair<JavaType, JavaSymbolName>> parameters) {
final List<MethodParameter> list = new ArrayList<MethodParameter>();
if (parameters != null) {
for (final MutablePair<JavaType, JavaSymbolName> parameter : parameters) {
list.add(new MethodParameter(parameter.getKey(), parameter
.getValue()));
}
}
return list;
}
private final JavaType type;
private final JavaSymbolName name;
/**
* Constructor.
*
* @param type the parameter's type (required)
* @param name the parameter's name (required)
*/
public MethodParameter(final JavaType type, final JavaSymbolName name) {
Validate.notNull(type, "Parameter type is required");
Validate.notNull(name, "Parameter name is required");
this.type = type;
this.name = name;
}
/**
* Constructor
*
* @param type the parameter's type (required)
* @param name the parameter's name (required)
*/
public MethodParameter(final JavaType type, final String name) {
this(type, new JavaSymbolName(name));
}
@Override
public JavaType getLeft() {
return type;
}
@Override
public JavaSymbolName getRight() {
return name;
}
@Override
public void setLeft(final JavaType left) {
throw new UnsupportedOperationException();
}
@Override
public void setRight(final JavaSymbolName right) {
throw new UnsupportedOperationException();
}
@Override
public JavaSymbolName setValue(final JavaSymbolName value) {
throw new UnsupportedOperationException();
}
@Override
public String toString() {
final StringBuilder builder = new StringBuilder();
builder.append("key: ").append(type.getFullyQualifiedTypeName());
builder.append(", value: ").append(name.getSymbolName());
return builder.toString();
}
}