AbstractFieldAnnotationProcessor.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.workbench.common.forms.dynamic.backend.server.context.generation.statik.impl.processors;

import javax.inject.Inject;

import org.apache.commons.lang3.StringUtils;
import org.drools.workbench.models.datamodel.oracle.Annotation;
import org.kie.workbench.common.forms.dynamic.backend.server.context.generation.statik.impl.FieldSetting;
import org.kie.workbench.common.forms.dynamic.service.context.generation.TransformerContext;
import org.kie.workbench.common.forms.fields.shared.FieldProvider;
import org.kie.workbench.common.forms.model.FieldDefinition;

public abstract class AbstractFieldAnnotationProcessor<FIELD extends FieldDefinition, PROVIDER extends FieldProvider<FIELD>> implements FieldAnnotationProcessor<FIELD> {

    protected PROVIDER fieldProvider;

    @Inject
    public AbstractFieldAnnotationProcessor(PROVIDER fieldProvider) {
        this.fieldProvider = fieldProvider;
    }

    @Override
    public FIELD getFieldDefinition(FieldSetting setting,
                                    Annotation annotation,
                                    TransformerContext context) {
        FIELD field = fieldProvider.getFieldByType(setting.getTypeInfo());

        if (field == null) {
            return null;
        }

        field.setId(setting.getFieldName());
        field.setName(setting.getFieldName());
        field.setLabel(setting.getLabel());

        String binding = setting.getFieldName();
        if (!StringUtils.isEmpty(setting.getProperty())) {
            binding += "." + setting.getProperty();
        }

        field.setBinding(binding);

        initField(field,
                  annotation,
                  setting,
                  context);

        return field;
    }

    @Override
    public boolean supportsAnnotation(Annotation annotation) {
        return annotation.getQualifiedTypeName().equals(getSupportedAnnotation().getName());
    }

    protected abstract void initField(FIELD field,
                                      Annotation annotation,
                                      FieldSetting fieldSetting,
                                      TransformerContext context);

    protected abstract Class<? extends java.lang.annotation.Annotation> getSupportedAnnotation();
}