--- /dev/null
+/*
+ * Sone - AbstractPostBuilder.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.data.impl;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import org.apache.commons.lang.StringUtils;
+
+import net.pterodactylus.sone.data.Post;
+import net.pterodactylus.sone.database.PostBuilder;
+import net.pterodactylus.sone.database.SoneProvider;
+
+/**
+ * Abstract {@link PostBuilder} implementation. It stores the state of the new
+ * post and performs validation, you only need to implement {@link #build()}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public abstract class AbstractPostBuilder implements PostBuilder {
+
+ /** The Sone provider for the created posts. */
+ protected final SoneProvider soneProvider;
+
+ /** Wether to create a post with a random ID. */
+ protected boolean randomId;
+
+ /** The ID of the post. */
+ protected String id;
+
+ /** The sender of the post. */
+ protected String senderId;
+
+ /** Whether to use the current time when creating the post. */
+ protected boolean currentTime;
+
+ /** The time of the post. */
+ protected long time;
+
+ /** The text of the post. */
+ protected String text;
+
+ /** The (optional) recipient of the post. */
+ protected String recipientId;
+
+ /**
+ * Creates a new abstract post builder.
+ *
+ * @param soneProvider
+ * The Sone provider
+ */
+ public AbstractPostBuilder(SoneProvider soneProvider) {
+ this.soneProvider = soneProvider;
+ }
+
+ //
+ // POSTBUILDER METHODS
+ //
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder copyPost(Post post) {
+ this.randomId = false;
+ this.id = post.getId();
+ this.senderId = post.getSone().getId();
+ this.currentTime = false;
+ this.time = post.getTime();
+ this.text = post.getText();
+ this.recipientId = (post.getRecipient() != null) ? post.getRecipient().getId() : null;
+ return this;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder randomId() {
+ randomId = true;
+ return this;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder withId(String id) {
+ this.id = id;
+ return this;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder from(String senderId) {
+ this.senderId = senderId;
+ return this;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder currentTime() {
+ currentTime = true;
+ return this;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder withTime(long time) {
+ this.time = time;
+ return this;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder withText(String text) {
+ this.text = text;
+ return this;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public PostBuilder to(String recipientId) {
+ this.recipientId = recipientId;
+ return this;
+ }
+
+ //
+ // PROTECTED METHODS
+ //
+
+ /**
+ * Validates the state of this post builder.
+ *
+ * @throws IllegalStateException
+ * if the state is not valid for building a new post
+ */
+ protected void validate() throws IllegalStateException {
+ checkState((randomId && (id == null)) || (!randomId && (id != null)), "exactly one of random ID or custom ID must be set");
+ checkState(senderId != null, "sender must not be null");
+ checkState((currentTime && (time == 0)) || (!currentTime && (time > 0)), "one of current time or custom time must be set");
+ checkState(!StringUtils.isBlank(text), "text must not be empty");
+ checkState((recipientId == null) || !recipientId.equals(senderId), "sender and recipient must not be the same");
+ }
+
+}
package net.pterodactylus.sone.data.impl;
-import static com.google.common.base.Preconditions.checkState;
-
import java.util.UUID;
import net.pterodactylus.sone.data.Post;
import net.pterodactylus.sone.database.PostBuilder;
import net.pterodactylus.sone.database.SoneProvider;
-import org.apache.commons.lang.StringUtils;
-
/**
* {@link PostBuilder} implementation that creates {@link PostImpl} objects.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
-public class PostBuilderImpl implements PostBuilder {
-
- /** The Sone provider for the created posts. */
- private final SoneProvider soneProvider;
-
- /** Wether to create a post with a random ID. */
- private boolean randomId;
-
- /** The ID of the post. */
- private String id;
-
- /** The sender of the post. */
- private String senderId;
-
- /** Whether to use the current time when creating the post. */
- private boolean currentTime;
-
- /** The time of the post. */
- private long time;
-
- /** The text of the post. */
- private String text;
-
- /** The (optional) recipient of the post. */
- private String recipientId;
+public class PostBuilderImpl extends AbstractPostBuilder {
/**
* Creates a new post builder.
* The Sone provider
*/
public PostBuilderImpl(SoneProvider soneProvider) {
- this.soneProvider = soneProvider;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder copyPost(Post post) {
- this.randomId = false;
- this.id = post.getId();
- this.senderId = post.getSone().getId();
- this.currentTime = false;
- this.time = post.getTime();
- this.text = post.getText();
- this.recipientId = (post.getRecipient() != null) ? post.getRecipient().getId() : null;
- return this;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder randomId() {
- randomId = true;
- return this;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder withId(String id) {
- this.id = id;
- return this;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder from(String senderId) {
- this.senderId = senderId;
- return this;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder currentTime() {
- currentTime = true;
- return this;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder withTime(long time) {
- this.time = time;
- return this;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder withText(String text) {
- this.text = text;
- return this;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public PostBuilder to(String recipientId) {
- this.recipientId = recipientId;
- return this;
+ super(soneProvider);
}
/**
*/
@Override
public Post build() {
- checkState((randomId && (id == null)) || (!randomId && (id != null)), "exactly one of random ID or custom ID must be set");
- checkState(senderId != null, "sender must not be null");
- checkState((currentTime && (time == 0)) || (!currentTime && (time > 0)), "one of current time or custom time must be set");
- checkState(!StringUtils.isBlank(text), "text must not be empty");
- checkState((recipientId == null) || !recipientId.equals(senderId), "sender and recipient must not be the same");
+ validate();
return new PostImpl(soneProvider, randomId ? UUID.randomUUID().toString() : id, senderId, recipientId, currentTime ? System.currentTimeMillis() : time, text);
}
projects / Sone.git / commitdiff