diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/NonNullBooleanTransformer.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/NonNullBooleanTransformer.java | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/NonNullBooleanTransformer.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/NonNullBooleanTransformer.java deleted file mode 100644 index 0c9749fcd3..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/NonNullBooleanTransformer.java +++ /dev/null @@ -1,79 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2010 Oracle. All rights reserved. - * This program and the accompanying materials are made available under the - * terms of the Eclipse Public License v1.0, which accompanies this distribution - * and is available at http://www.eclipse.org/legal/epl-v10.html. - * - * Contributors: - * Oracle - initial API and implementation - ******************************************************************************/ -package org.eclipse.jpt.common.utility.internal; - -/** - * A <code>NonNullBooleanTransformer</code> will transform a possibly-null - * {@link Boolean} to a non-null {@link Boolean}:<ul> - * <li>When the original {@link Boolean} is <em>not</em> <code>null</code>, - * the transformer will return it unchanged. - * <li>When the original {@link Boolean} is <code>null</code>, - * the transformer will return its client-specified "null value" - * ({@link Boolean#TRUE} or {@link Boolean#FALSE}). - * </ul> - */ -public final class NonNullBooleanTransformer - implements Transformer<Boolean, Boolean> -{ - // not null - private final Boolean nullValue; - - /** - * A {@link Transformer} that will return the original {@link Boolean} when - * it is non-<code>null</code>; otherwise the {@link Transformer} will return - * {@link Boolean#TRUE}. - */ - public static final Transformer<Boolean, Boolean> TRUE = new NonNullBooleanTransformer(Boolean.TRUE); - - /** - * A {@link Transformer} that will return the original {@link Boolean} when - * it is non-<code>null</code>; otherwise the {@link Transformer} will return - * {@link Boolean#FALSE}. - */ - public static final Transformer<Boolean, Boolean> FALSE = new NonNullBooleanTransformer(Boolean.FALSE); - - /** - * Return a transformer that will return the specified value if the original - * value is <code>null</code>. Throw a {@link NullPointerException} if the - * specified value is <code>null</code>. - */ - public Transformer<Boolean, Boolean> valueOf(Boolean b) { - return valueOf(b.booleanValue()); - } - - /** - * Return a transformer that will return the {@link Boolean} corresponding - * to the specified value if the original value is <code>null</code>. - */ - public Transformer<Boolean, Boolean> valueOf(boolean b) { - return b ? TRUE : FALSE; - } - - /** - * Ensure only 2 constant versions. - */ - private NonNullBooleanTransformer(Boolean nullValue) { - super(); - if (nullValue == null) { - throw new NullPointerException(); - } - this.nullValue = nullValue; - } - - public Boolean transform(Boolean b) { - return (b != null) ? b : this.nullValue; - } - - @Override - public String toString() { - return StringTools.buildToStringFor(this, this.nullValue); - } - -} |