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authorMatthias Andreas Benkard <code@mail.matthias.benkard.de>2020-03-22 07:23:07 +0100
committerMatthias Andreas Benkard <code@mail.matthias.benkard.de>2020-03-22 07:29:45 +0100
commit3d399f3e0b150064b778a64ebfd495da2640bb4f (patch)
tree64fbcdaffb3795257bf6e0c426409ba1be8dd52b /src/main/java/eu
parentf5999553827e64d1ea9b51d8bff573382e64eeb9 (diff)
Make paged post queries generic over Bookmark and LazychatMessage.
Change-Id: Ie0ac96bfc80c3c31bb948681ef90a9a50a512cf4
Diffstat (limited to 'src/main/java/eu')
-rw-r--r--src/main/java/eu/mulk/mulkcms2/benki/bookmarks/Bookmark.java19
-rw-r--r--src/main/java/eu/mulk/mulkcms2/benki/bookmarks/BookmarkResource.java78
-rw-r--r--src/main/java/eu/mulk/mulkcms2/benki/generic/Post.java79
-rw-r--r--src/main/java/eu/mulk/mulkcms2/benki/lazychat/LazychatMessage.java19
4 files changed, 109 insertions, 86 deletions
diff --git a/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/Bookmark.java b/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/Bookmark.java
index f7dc9c0..8beda97 100644
--- a/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/Bookmark.java
+++ b/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/Bookmark.java
@@ -4,6 +4,7 @@ import eu.mulk.mulkcms2.benki.generic.Post;
import eu.mulk.mulkcms2.benki.users.User;
import eu.mulk.mulkcms2.common.markdown.MarkdownConverter;
import io.quarkus.security.identity.SecurityIdentity;
+import java.util.List;
import java.util.Set;
import javax.annotation.CheckForNull;
import javax.persistence.CollectionTable;
@@ -14,8 +15,7 @@ import javax.persistence.FetchType;
import javax.persistence.JoinColumn;
import javax.persistence.Table;
import javax.persistence.Transient;
-import javax.persistence.criteria.CriteriaBuilder;
-import javax.persistence.criteria.CriteriaQuery;
+import org.hibernate.Session;
@Entity
@Table(name = "bookmarks", schema = "benki")
@@ -43,12 +43,17 @@ public class Bookmark extends Post {
return new MarkdownConverter().htmlify(description);
}
- public static CriteriaQuery<Bookmark> findViewable(
- SecurityIdentity readerIdentity,
+ public static List<Bookmark> findViewable(
+ Session session, SecurityIdentity viewer, @CheckForNull User owner) {
+ return findViewable(Bookmark.class, session, viewer, owner, null, null).posts;
+ }
+
+ public static PostPage<Bookmark> findViewable(
+ Session session,
+ SecurityIdentity viewer,
@CheckForNull User owner,
@CheckForNull Integer cursor,
- CriteriaBuilder cb,
- boolean forward) {
- return Post.findViewable(Bookmark.class, readerIdentity, owner, cursor, cb, forward);
+ @CheckForNull Integer count) {
+ return findViewable(Bookmark.class, session, viewer, owner, cursor, count);
}
}
diff --git a/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/BookmarkResource.java b/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/BookmarkResource.java
index 7dd35d4..2272db2 100644
--- a/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/BookmarkResource.java
+++ b/src/main/java/eu/mulk/mulkcms2/benki/bookmarks/BookmarkResource.java
@@ -31,7 +31,6 @@ import java.time.temporal.TemporalAccessor;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
-import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;
import javax.annotation.CheckForNull;
@@ -102,10 +101,11 @@ public class BookmarkResource {
maxResults = maxResults == null ? defaultMaxResults : maxResults;
- var q = selectBookmarks(null, cursor, maxResults);
+ var session = entityManager.unwrap(Session.class);
+ var q = Bookmark.findViewable(session, identity, null, cursor, maxResults);
return bookmarkList
- .data("bookmarks", q.bookmarks)
+ .data("bookmarks", q.posts)
.data("feedUri", "/bookmarks/feed")
.data("authenticated", !identity.isAnonymous())
.data("hasPreviousPage", q.prevCursor != null)
@@ -126,10 +126,11 @@ public class BookmarkResource {
maxResults = maxResults == null ? defaultMaxResults : maxResults;
var owner = User.findByNickname(ownerName);
- var q = selectBookmarks(owner, cursor, maxResults);
+ var session = entityManager.unwrap(Session.class);
+ var q = Bookmark.findViewable(session, identity, owner, cursor, maxResults);
return bookmarkList
- .data("bookmarks", q.bookmarks)
+ .data("bookmarks", q.posts)
.data("feedUri", String.format("/bookmarks/~%s/feed", ownerName))
.data("authenticated", !identity.isAnonymous())
.data("hasPreviousPage", q.prevCursor != null)
@@ -155,7 +156,7 @@ public class BookmarkResource {
}
private String makeFeed(@Nullable User owner, @Nullable String ownerName) throws FeedException {
- var bookmarks = selectBookmarks(owner);
+ var bookmarks = Bookmark.findViewable(entityManager.unwrap(Session.class), identity, owner);
var feed = new Feed("atom_1.0");
var feedSubId = owner == null ? "" : String.format("/%d", owner.id);
@@ -289,69 +290,4 @@ public class BookmarkResource {
static String htmlDateTime(TemporalAccessor x) {
return htmlDateFormatter.format(x);
}
-
- private static class BookmarkPage {
- @CheckForNull Integer prevCursor;
- @CheckForNull Integer cursor;
- @CheckForNull Integer nextCursor;
- List<Bookmark> bookmarks;
-
- public BookmarkPage(
- @CheckForNull Integer c0,
- @CheckForNull Integer c1,
- @CheckForNull Integer c2,
- List<Bookmark> resultList) {
- this.prevCursor = c0;
- this.cursor = c1;
- this.nextCursor = c2;
- this.bookmarks = resultList;
- }
- }
-
- private List<Bookmark> selectBookmarks(@CheckForNull User owner) {
- return selectBookmarks(owner, null, null).bookmarks;
- }
-
- private BookmarkPage selectBookmarks(
- @CheckForNull User owner, @CheckForNull Integer cursor, @CheckForNull Integer count) {
-
- if (cursor != null) {
- Objects.requireNonNull(count);
- }
-
- var cb = entityManager.unwrap(Session.class).getCriteriaBuilder();
-
- var forwardCriteria = Bookmark.findViewable(identity, owner, cursor, cb, true);
- var forwardQuery = entityManager.createQuery(forwardCriteria);
-
- if (count != null) {
- forwardQuery.setMaxResults(count + 1);
- }
-
- log.debug(forwardQuery.unwrap(org.hibernate.query.Query.class).getQueryString());
-
- @CheckForNull Integer prevCursor = null;
- @CheckForNull Integer nextCursor = null;
-
- if (cursor != null) {
- // Look backwards as well so we can find the prevCursor.
- var backwardCriteria = Bookmark.findViewable(identity, owner, cursor, cb, false);
- var backwardQuery = entityManager.createQuery(backwardCriteria);
- backwardQuery.setMaxResults(count);
- var backwardResults = backwardQuery.getResultList();
- if (!backwardResults.isEmpty()) {
- prevCursor = backwardResults.get(backwardResults.size() - 1).id;
- }
- }
-
- var forwardResults = forwardQuery.getResultList();
- if (count != null) {
- if (forwardResults.size() == count + 1) {
- nextCursor = forwardResults.get(count).id;
- forwardResults.remove((int) count);
- }
- }
-
- return new BookmarkPage(prevCursor, cursor, nextCursor, forwardResults);
- }
}
diff --git a/src/main/java/eu/mulk/mulkcms2/benki/generic/Post.java b/src/main/java/eu/mulk/mulkcms2/benki/generic/Post.java
index 502cb0d..898eeb4 100644
--- a/src/main/java/eu/mulk/mulkcms2/benki/generic/Post.java
+++ b/src/main/java/eu/mulk/mulkcms2/benki/generic/Post.java
@@ -9,6 +9,8 @@ import io.quarkus.hibernate.orm.panache.PanacheEntityBase;
import io.quarkus.security.identity.SecurityIdentity;
import java.time.OffsetDateTime;
import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
import java.util.Set;
import javax.annotation.CheckForNull;
import javax.persistence.Column;
@@ -30,12 +32,16 @@ import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.From;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.Predicate;
+import org.hibernate.Session;
+import org.jboss.logging.Logger;
@Entity
@Table(name = "posts", schema = "benki")
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public abstract class Post extends PanacheEntityBase {
+ private static Logger log = Logger.getLogger(Post.class);
+
@Id
@SequenceGenerator(
allocationSize = 1,
@@ -69,7 +75,7 @@ public abstract class Post extends PanacheEntityBase {
inverseJoinColumns = @JoinColumn(name = "target"))
public Set<Role> targets;
- public static <T extends Post> CriteriaQuery<T> findViewable(
+ protected static <T extends Post> CriteriaQuery<T> queryViewable(
Class<T> entityClass,
SecurityIdentity readerIdentity,
@CheckForNull User owner,
@@ -124,4 +130,75 @@ public abstract class Post extends PanacheEntityBase {
return query;
}
+
+ public static class PostPage<T extends Post> {
+ public @CheckForNull Integer prevCursor;
+ public @CheckForNull Integer cursor;
+ public @CheckForNull Integer nextCursor;
+ public List<T> posts;
+
+ private PostPage(
+ @CheckForNull Integer c0,
+ @CheckForNull Integer c1,
+ @CheckForNull Integer c2,
+ List<T> resultList) {
+ this.prevCursor = c0;
+ this.cursor = c1;
+ this.nextCursor = c2;
+ this.posts = resultList;
+ }
+ }
+
+ protected static <T extends Post> List<T> findViewable(
+ Class<T> entityClass, Session session, SecurityIdentity viewer, @CheckForNull User owner) {
+ return findViewable(entityClass, session, viewer, owner, null, null).posts;
+ }
+
+ protected static <T extends Post> PostPage<T> findViewable(
+ Class<T> entityClass,
+ Session session,
+ SecurityIdentity viewer,
+ @CheckForNull User owner,
+ @CheckForNull Integer cursor,
+ @CheckForNull Integer count) {
+
+ if (cursor != null) {
+ Objects.requireNonNull(count);
+ }
+
+ var cb = session.getCriteriaBuilder();
+
+ var forwardCriteria = Bookmark.queryViewable(entityClass, viewer, owner, cursor, cb, true);
+ var forwardQuery = session.createQuery(forwardCriteria);
+
+ if (count != null) {
+ forwardQuery.setMaxResults(count + 1);
+ }
+
+ log.debug(forwardQuery.unwrap(org.hibernate.query.Query.class).getQueryString());
+
+ @CheckForNull Integer prevCursor = null;
+ @CheckForNull Integer nextCursor = null;
+
+ if (cursor != null) {
+ // Look backwards as well so we can find the prevCursor.
+ var backwardCriteria = Bookmark.queryViewable(entityClass, viewer, owner, cursor, cb, false);
+ var backwardQuery = session.createQuery(backwardCriteria);
+ backwardQuery.setMaxResults(count);
+ var backwardResults = backwardQuery.getResultList();
+ if (!backwardResults.isEmpty()) {
+ prevCursor = backwardResults.get(backwardResults.size() - 1).id;
+ }
+ }
+
+ var forwardResults = forwardQuery.getResultList();
+ if (count != null) {
+ if (forwardResults.size() == count + 1) {
+ nextCursor = forwardResults.get(count).id;
+ forwardResults.remove((int) count);
+ }
+ }
+
+ return new PostPage(prevCursor, cursor, nextCursor, forwardResults);
+ }
}
diff --git a/src/main/java/eu/mulk/mulkcms2/benki/lazychat/LazychatMessage.java b/src/main/java/eu/mulk/mulkcms2/benki/lazychat/LazychatMessage.java
index 504dd10..4e58259 100644
--- a/src/main/java/eu/mulk/mulkcms2/benki/lazychat/LazychatMessage.java
+++ b/src/main/java/eu/mulk/mulkcms2/benki/lazychat/LazychatMessage.java
@@ -5,6 +5,7 @@ import eu.mulk.mulkcms2.benki.users.User;
import eu.mulk.mulkcms2.common.markdown.MarkdownConverter;
import io.quarkus.security.identity.SecurityIdentity;
import java.util.Collection;
+import java.util.List;
import javax.annotation.CheckForNull;
import javax.persistence.Column;
import javax.persistence.Entity;
@@ -12,8 +13,7 @@ import javax.persistence.FetchType;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Transient;
-import javax.persistence.criteria.CriteriaBuilder;
-import javax.persistence.criteria.CriteriaQuery;
+import org.hibernate.Session;
@Entity
@Table(name = "lazychat_messages", schema = "benki")
@@ -33,12 +33,17 @@ public class LazychatMessage extends Post {
return new MarkdownConverter().htmlify(content);
}
- public static CriteriaQuery<LazychatMessage> findViewable(
- SecurityIdentity readerIdentity,
+ public static List<LazychatMessage> findViewable(
+ Session session, SecurityIdentity viewer, @CheckForNull User owner) {
+ return findViewable(LazychatMessage.class, session, viewer, owner, null, null).posts;
+ }
+
+ public static PostPage<LazychatMessage> findViewable(
+ Session session,
+ SecurityIdentity viewer,
@CheckForNull User owner,
@CheckForNull Integer cursor,
- CriteriaBuilder cb,
- boolean forward) {
- return Post.findViewable(LazychatMessage.class, readerIdentity, owner, cursor, cb, forward);
+ @CheckForNull Integer count) {
+ return findViewable(LazychatMessage.class, session, viewer, owner, cursor, count);
}
}