X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2Fimpl%2FAbstractPostBuilder.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2Fimpl%2FAbstractPostBuilder.java;h=342ea5cf6b87f0d5991382e0b8e20a8f15cbe484;hb=c50bfe2d891013b8da5539acf2881da5f60da231;hp=0000000000000000000000000000000000000000;hpb=d07f50c957382e37dc7a2a1680631f69385dbbda;p=Sone.git

diff --git a/src/main/java/net/pterodactylus/sone/data/impl/AbstractPostBuilder.java b/src/main/java/net/pterodactylus/sone/data/impl/AbstractPostBuilder.java
new file mode 100644
index 0000000..342ea5c
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/data/impl/AbstractPostBuilder.java
@@ -0,0 +1,170 @@
+/*
+ * 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");
+	}
+
+}