PomConverter.java

package org.springframework.roo.project.converter;

import java.util.List;

import org.apache.commons.lang3.StringUtils;
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.project.ProjectOperations;
import org.springframework.roo.project.maven.Pom;
import org.springframework.roo.shell.Completion;
import org.springframework.roo.shell.Converter;
import org.springframework.roo.shell.MethodTarget;

@Component
@Service
public class PomConverter implements Converter<Pom> {

    /**
     * An option context value indicating that the currently focused module
     * should be included when this {@link Converter} generates completions.
     */
    public static final String INCLUDE_CURRENT_MODULE = "includeCurrent";

    static final String ROOT_MODULE_SYMBOL = "~";

    @Reference ProjectOperations projectOperations;

    private void addCompletion(final String moduleName,
            final List<Completion> completions) {
        final String nonEmptyModuleName = StringUtils.defaultIfEmpty(
                moduleName, ROOT_MODULE_SYMBOL);
        completions.add(new Completion(nonEmptyModuleName));
    }

    public Pom convertFromText(final String value, final Class<?> targetType,
            final String optionContext) {
        final String moduleName;
        if (ROOT_MODULE_SYMBOL.equals(value)) {
            moduleName = "";
        }
        else {
            moduleName = value;
        }
        return projectOperations.getPomFromModuleName(moduleName);
    }

    public boolean getAllPossibleValues(final List<Completion> completions,
            final Class<?> targetType, final String existingData,
            final String optionContext, final MethodTarget target) {
        final String focusedModuleName = projectOperations
                .getFocusedModuleName();
        for (final String moduleName : projectOperations.getModuleNames()) {
            if (isModuleRelevant(moduleName, focusedModuleName, optionContext)) {
                addCompletion(moduleName, completions);
            }
        }
        return true;
    }

    private boolean isModuleRelevant(final String moduleName,
            final String focusedModuleName, final String optionContext) {
        return StringUtils.contains(optionContext, INCLUDE_CURRENT_MODULE)
                || !moduleName.equals(focusedModuleName);
    }

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