m-chrzan.xyz
aboutsummaryrefslogtreecommitdiff
path: root/src/pl/edu/mimuw/cloudatlas/model/Attribute.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/pl/edu/mimuw/cloudatlas/model/Attribute.java')
-rw-r--r--src/pl/edu/mimuw/cloudatlas/model/Attribute.java106
1 files changed, 0 insertions, 106 deletions
diff --git a/src/pl/edu/mimuw/cloudatlas/model/Attribute.java b/src/pl/edu/mimuw/cloudatlas/model/Attribute.java
deleted file mode 100644
index 46ffab3..0000000
--- a/src/pl/edu/mimuw/cloudatlas/model/Attribute.java
+++ /dev/null
@@ -1,106 +0,0 @@
-/**
- * Copyright (c) 2014, University of Warsaw
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification, are permitted
- * provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this list of
- * conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
- * conditions and the following disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
- * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-package pl.edu.mimuw.cloudatlas.model;
-
-/**
- * Represents an attribute (without value, name only).
- * <p>
- * A valid attribute name is an identifier starting with a letter and containing only letters and digits. It can
- * additionally start with an ampersand - such names are reserved for queries.
- * <p>
- * This class is immutable.
- */
-public class Attribute {
- private final String name;
-
- /**
- * Creates a new <code>Attribute</code> object with the specified <code>name</code>.
- *
- * @param name the name of the attribute
- * @throws IllegalArgumentException if the <code>name</code> does not meet the rules
- */
- public Attribute(String name) {
- if(!name.matches("^&?[a-zA-Z]{1}[a-zA-z0-9_]*$"))
- throw new IllegalArgumentException("Invalid name: may contain only letters, digits, underscores, "
- + "must start with a letter and may optionally have an ampersand at the beginning.");
- this.name = name;
- }
-
- /**
- * Indicates whether an <code>attribute</code> represents a query. This is true if and only if the attribute's name starts with an ampersand.
- *
- * @param attribute the attribute to check
- * @return whether the <code>attribute</code> represents a query
- */
- public static boolean isQuery(Attribute attribute) {
- return attribute.getName().startsWith("&");
- }
-
- /**
- * Gets the name of this attribute.
- *
- * @return string representing name
- */
- public String getName() {
- return name;
- }
-
- /**
- * Returns a hash code value for this attribute. For proper behavior when using <code>Attribute</code> objects in
- * <code>HashMap</code>, <code>HashSet</code> etc. this is the hash code of a string representing the attribute's name.
- *
- * @return hash code for this attribute
- */
- @Override
- public int hashCode() {
- return name.hashCode();
- }
-
- /**
- * Indicates whether another object is equal to this attribute.
- *
- * @param object the object to check
- * @return true if and only if the <code>object</code> is an instance of <code>Attribute</code> class and has
- * an identical name
- */
- @Override
- public boolean equals(Object object) {
- if(object == null)
- return false;
- if(getClass() != object.getClass())
- return false;
- return name.equals(((Attribute)object).name);
- }
-
- /**
- * Returns a textual representation of this attribute.
- *
- * @return the name of this attribute
- */
- @Override
- public String toString() {
- return name;
- }
-}