/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.asakusafw.dmdl.directio.csv.driver;
import java.util.Arrays;
import java.util.Map;
import com.asakusafw.dmdl.Diagnostic;
import com.asakusafw.dmdl.Diagnostic.Level;
import com.asakusafw.dmdl.directio.csv.driver.CsvFieldTrait.Kind;
import com.asakusafw.dmdl.model.AstAttribute;
import com.asakusafw.dmdl.model.AstAttributeElement;
import com.asakusafw.dmdl.model.BasicTypeKind;
import com.asakusafw.dmdl.semantics.DmdlSemantics;
import com.asakusafw.dmdl.semantics.PropertyDeclaration;
import com.asakusafw.dmdl.semantics.Type;
import com.asakusafw.dmdl.semantics.type.BasicType;
import com.asakusafw.dmdl.spi.PropertyAttributeDriver;
import com.asakusafw.dmdl.util.AttributeUtil;
/**
* Processes <code>@directio.csv.field</code> attributes.
<h2>'@directio.csv.field' attribute</h2>
The attributed declaration must be:
<ul>
<li> with name=[string-literal] (optional, default: property name)</li>
</ul>
* @since 0.2.5
*/
public class CsvFieldDriver extends PropertyAttributeDriver {
/**
* The attribute name.
*/
public static final String TARGET_NAME = "directio.csv.field"; //$NON-NLS-1$
/**
* The element name.
*/
public static final String ELEMENT_NAME = "name"; //$NON-NLS-1$
@Override
public String getTargetName() {
return TARGET_NAME;
}
@Override
public void process(DmdlSemantics environment, PropertyDeclaration declaration, AstAttribute attribute) {
Map<String, AstAttributeElement> elements = AttributeUtil.getElementMap(attribute);
String value = AttributeUtil.takeString(environment, attribute, elements, ELEMENT_NAME, false);
environment.reportAll(AttributeUtil.reportInvalidElements(attribute, elements.values()));
checkFieldType(environment, declaration, attribute, BasicTypeKind.values());
if (CsvFieldDriver.checkConflict(environment, declaration, attribute)) {
declaration.putTrait(
CsvFieldTrait.class,
new CsvFieldTrait(attribute, Kind.VALUE, value));
}
}
static boolean checkConflict(DmdlSemantics environment, PropertyDeclaration declaration, AstAttribute attribute) {
assert environment != null;
assert declaration != null;
assert attribute != null;
if (declaration.getTrait(CsvFieldTrait.class) == null) {
return true;
}
environment.report(new Diagnostic(
Level.ERROR,
attribute,
Messages.getString("CsvFieldDriver.diagnosticDuplicateModelAttribute"), //$NON-NLS-1$
declaration.getOwner().getName().identifier,
declaration.getName().identifier));
return false;
}
static void checkFieldType(
DmdlSemantics environment,
PropertyDeclaration declaration,
AstAttribute attribute,
BasicTypeKind... types) {
assert environment != null;
assert declaration != null;
assert attribute != null;
assert types != null;
assert types.length > 0;
Type type = declaration.getType();
if (type instanceof BasicType) {
BasicTypeKind kind = ((BasicType) type).getKind();
for (BasicTypeKind accept : types) {
if (kind == accept) {
return;
}
}
}
environment.report(new Diagnostic(
Level.ERROR,
attribute,
Messages.getString("CsvFieldDriver.diagnosticInvalidType"), //$NON-NLS-1$
declaration.getOwner().getName().identifier,
declaration.getName().identifier,
attribute.name.toString(),
Arrays.asList(types)));
}
}