Finish remove utils.data

utils.data now lives in the esodata project; not in this one

1 files changed, 0 insertions, 76 deletions

diff --git a/base/src/main/java/bjc/utils/data/SingleSupplier.java b/base/src/main/java/bjc/utils/data/SingleSupplier.java
deleted file mode 100644
index 8054d33..0000000
--- a/base/src/main/java/bjc/utils/data/SingleSupplier.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package bjc.utils.data;
-
-import java.util.function.Supplier;
-
-/**
- * A supplier that can only supply one value.
- *
- * Attempting to retrieve another value will cause an exception to be thrown.
- *
- * @author ben
- *
- * @param <T>
- *        The supplied type
- */
-public class SingleSupplier<T> implements Supplier<T> {
-	/* The next supplier ID. */
-	private static long nextID = 0;
-	/* The supplier to yield from. */
-	private final Supplier<T> source;
-	/* Whether this value has been retrieved yet. */
-	private boolean gotten;
-	/* The ID of this supplier. */
-	private final long id;
-
-	/*
-	 * The place where the supplier was instantiated.
-	 *
-	 * @NOTE This is both slow to create, and generally bad practice to keep
-	 * exceptions around without throwing them. However, it is very useful
-	 * to find where the first instantiation was.
-	 */
-	private Exception instSite;
-
-	/**
-	 * Create a new single supplier from an existing value.
-	 *
-	 * @param supp
-	 *        The supplier to give a single value from.
-	 */
-	public SingleSupplier(final Supplier<T> supp) {
-		source = supp;
-
-		gotten = false;
-
-		id = nextID++;
-	}
-
-	@Override
-	public T get() {
-		if(gotten == true) {
-			final String msg = String.format(
-					"Attempted to retrieve value more than once from single supplier #%d", id);
-
-			final IllegalStateException isex = new IllegalStateException(msg);
-
-			isex.initCause(instSite);
-
-			throw isex;
-		}
-
-		gotten = true;
-
-		try {
-			throw new IllegalStateException("Previous instantiation here.");
-		} catch(final IllegalStateException isex) {
-			instSite = isex;
-		}
-
-		return source.get();
-	}
-
-	@Override
-	public String toString() {
-		return String.format("SingleSupplier [source='%s', gotten=%s, id=%s]", source, gotten, id);
-	}
-}