ProviderIdConverter.java

package org.springframework.roo.addon.cloud;

import java.util.List;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
import org.springframework.roo.addon.cloud.providers.CloudProviderId;
import org.springframework.roo.shell.Completion;
import org.springframework.roo.shell.Converter;
import org.springframework.roo.shell.MethodTarget;

/**
 * 
 * Cloud Providers ID converter
 * 
 * @author Juan Carlos García del Canto
 * @since 1.2.6
 *
 */
@Component
@Service
public class ProviderIdConverter implements Converter<CloudProviderId> {

  @Reference
  private CloudOperations operations;

  protected void bindOperations(CloudOperations operations) {
    this.operations = operations;
  }

  protected void unbindOperations(CloudOperations operations) {
    this.operations = null;
  }

  @Override
  public CloudProviderId convertFromText(String value, Class<?> targetType, String optionContext) {
    return operations.getProviderIdByName(value);
  }

  @Override
  public boolean getAllPossibleValues(List<Completion> completions, Class<?> targetType,
      String existingData, String optionContext, MethodTarget target) {
    for (final CloudProviderId id : operations.getProvidersId()) {
      if (existingData.isEmpty() || id.getId().equals(existingData)
          || id.getId().startsWith(existingData)) {
        completions.add(new Completion(id.getId()));
      }
    }
    return true;
  }

  @Override
  public boolean supports(Class<?> type, String optionContext) {
    return CloudProviderId.class.isAssignableFrom(type);
  }

}