X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2Fimpl%2FAbstractImageBuilder.java;fp=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2Fimpl%2FAbstractImageBuilder.java;h=533ba39cc354c246534d13c20c51dd643aba046f;hp=0000000000000000000000000000000000000000;hb=f4f5fb752ff9aff0235a907e170c6961576562f6;hpb=7017646bf42cb265b6df539bb6def40b91d2f968
diff --git a/src/main/java/net/pterodactylus/sone/data/impl/AbstractImageBuilder.java b/src/main/java/net/pterodactylus/sone/data/impl/AbstractImageBuilder.java
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+/*
+ * Sone - AbstractImageBuilder.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 .
+ */
+package net.pterodactylus.sone.data.impl;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import net.pterodactylus.sone.database.ImageBuilder;
+
+/**
+ * Abstract {@link ImageBuilder} implementation. It stores the state of the new
+ * album and performs validation, you only need to implement {@link #build()}.
+ *
+ * @author David âBombeâ Roden
+ */
+public abstract class AbstractImageBuilder implements ImageBuilder {
+
+ /** Whether to create an album with a random ID. */
+ protected boolean randomId;
+
+ /** The ID of the album to create. */
+ protected String id;
+
+ @Override
+ public ImageBuilder randomId() {
+ randomId = true;
+ return this;
+ }
+
+ @Override
+ public ImageBuilder withId(String id) {
+ this.id = id;
+ return this;
+ }
+
+ //
+ // PROTECTED METHODS
+ //
+
+ /**
+ * Validates the state of this image builder.
+ *
+ * @throws IllegalStateException
+ * if the state is not valid for building a new image
+ */
+ protected void validate() throws IllegalStateException {
+ checkState((randomId && (id == null)) || (!randomId && (id != null)), "exactly one of random ID or custom ID must be set");
+ }
+
+}