org.gatein.api.site.SiteQuery Maven / Gradle / Ivy
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* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
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*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
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*
* This software is distributed in the hope that it will be useful,
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
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*/
package org.gatein.api.site;
import org.gatein.api.common.Filter;
import org.gatein.api.common.Pagination;
import org.gatein.api.common.Sorting;
import org.gatein.api.internal.Parameters;
import java.util.EnumSet;
/**
* An immutable SiteQuery object that can be used to query sites. This object is created by using the builder
* {@link SiteQuery.Builder}.
*
* @author Nick Scavelli
*/
public class SiteQuery {
private final EnumSet siteTypes;
private final boolean includeEmptySites;
private final Filter filter;
private final Pagination pagination;
private final Sorting sorting;
/**
* Creates a site query object for all parameters which make up the query. The {@link SiteQuery.Builder} object should be
* used instead to create this object.
*
* @param siteTypes the site types to return for this query
* @param includeEmptySites flag if true will include sites that are empty (i.e. no navigation associated with it).
* @see SiteQuery.Builder
*/
private SiteQuery(EnumSet siteTypes, boolean includeEmptySites, Filter filter, Pagination pagination,
Sorting sorting) {
this.siteTypes = siteTypes;
this.includeEmptySites = includeEmptySites;
this.filter = filter;
this.pagination = pagination;
this.sorting = sorting;
}
/**
* The site types used for this query.
*
* @return the site types associated with this query.
*/
public EnumSet getSiteTypes() {
return siteTypes;
}
/**
* The flag indicates if the query should include/exclude sites that are empty. Empty sites generally have no navigation
* associated with them (hence cannot be viewed) which typically happens for spaces of a parent group. For example the space
* /platform is the parent group of /platform/administrators, however the /platform space should
* never be returned as a site in most cases.
*
* @return true if the query should return sites that are empty, false otherwise (default)
*/
public boolean isIncludeEmptySites() {
return includeEmptySites;
}
public Filter getFilter() {
return filter;
}
public Sorting getSorting() {
return sorting;
}
public Pagination getPagination() {
return pagination;
}
/**
* Convenience method for creating a new SiteQuery with pagination set to the next page represented by by
* {@link org.gatein.api.common.Pagination#getNext()}
*
* @return a new SiteQuery with pagination set to the next page.
*/
public SiteQuery nextPage() {
return new Builder().from(this).withNextPage().build();
}
/**
* Convenience method for creating a new SiteQuery with pagination set to the previous page represented by by
* {@link org.gatein.api.common.Pagination#getPrevious()}
*
* @return a new SiteQuery with pagination set to the previous page.
*/
public SiteQuery previousPage() {
return new Builder().from(this).withPreviousPage().build();
}
/**
* The builder class responsible for building SiteQuery objects.
*
* @see SiteQuery
*/
public static class Builder {
/**
* The default limit used for pagination
*/
public static final int DEFAULT_LIMIT = 15;
/**
* The default pagination used for SiteQuery's with a limit set to {@link Builder#DEFAULT_LIMIT}
*/
public static final Pagination DEFAULT_PAGINATION = new Pagination(0, DEFAULT_LIMIT);
/**
* Default site type used to build SiteQuery's if one is not defined.
*/
public static final SiteType DEFAULT_SITE_TYPE = SiteType.SITE;
private EnumSet siteTypes;
private boolean emptySites;
private Filter filter;
private Pagination pagination;
private Sorting sorting;
public Builder() {
pagination = DEFAULT_PAGINATION;
siteTypes = EnumSet.of(DEFAULT_SITE_TYPE);
}
/**
* Sets the site types of this builder
*
* @param first the site type this builder is to contain
* @param rest the remaining site type's this builder is to contain
* @return this builder
*/
public Builder withSiteTypes(SiteType first, SiteType... rest) {
Parameters.requireNonNull(first, "first");
return withSiteTypes(EnumSet.of(first, rest));
}
/**
* Sets the site types of this builder.
*
* @param siteTypes the set of siteTypes to set for this builder.
* @return this builder
*/
public Builder withSiteTypes(EnumSet siteTypes) {
this.siteTypes = EnumSet.copyOf(Parameters.requireNonNull(siteTypes, "siteTypes"));
return this;
}
/**
* Sets the site type's of this builder to include all SiteType's
*
* @return this builder
*/
public Builder withAllSiteTypes() {
this.siteTypes = EnumSet.allOf(SiteType.class);
return this;
}
/**
* @see SiteQuery#isIncludeEmptySites
* @return this builder
*/
public Builder includeEmptySites(boolean emptySites) {
this.emptySites = emptySites;
return this;
}
/**
* Sets the pagination object of this builder to use the specified offset and limit.
*
* @param offset the offset of the pagination
* @param limit the limit of the pagination
* @return this builder
*/
public Builder withPagination(int offset, int limit) {
return withPagination(new Pagination(offset, limit));
}
/**
* Sets the pagination object of this builder
*
* @param pagination the pagination object
* @return this builder
*/
public Builder withPagination(Pagination pagination) {
this.pagination = pagination;
return this;
}
/**
* Sets the pagination of this builder to pagination.getNext() if it's not null.
*
* @return this builder
*/
public Builder withNextPage() {
if (pagination != null) {
this.pagination = pagination.getNext();
}
return this;
}
/**
* Sets the pagination of this builder to pagination.getPrevious() if it's not null.
*
* @return this builder
*/
public Builder withPreviousPage() {
if (pagination != null) {
this.pagination = pagination.getPrevious();
}
return this;
}
/**
* Sets the filter for this builder
*
* @param filter the filter
* @return this builder
*/
public Builder withFilter(Filter filter) {
this.filter = filter;
return this;
}
/**
* Sets the sorting object for this builder
*
* @param sorting the sorting object
* @return this builder
*/
public Builder withSorting(Sorting sorting) {
this.sorting = sorting;
return this;
}
/**
* Sets the order of the sorting object of this builder to Sorting.Order.ascending
*
* @return this builder
*/
public Builder ascending() {
sorting = new Sorting(Sorting.Order.ascending);
return this;
}
/**
* Sets the order of the sorting object of this builder to Sorting.Order.descending
*
* @return this builder
*/
public Builder descending() {
sorting = new Sorting(Sorting.Order.descending);
return this;
}
/**
* Creates a new SiteQuery object represented by the state this builder
*
* @return a new SiteQuery object
*/
public SiteQuery build() {
if (siteTypes == null || siteTypes.isEmpty())
siteTypes = EnumSet.of(SiteType.SITE);
return new SiteQuery(siteTypes, emptySites, filter, pagination, sorting);
}
/**
* Creates a new builder from an existing SiteQuery.
*
* @param query the query used to build the initial state of the builder
* @return a new builder
*/
public Builder from(SiteQuery query) {
return new Builder().includeEmptySites(query.isIncludeEmptySites()).withSiteTypes(query.getSiteTypes())
.withFilter(query.getFilter()).withPagination(query.getPagination()).withSorting(query.getSorting());
}
}
}
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