public static void register(){ public static void registerInterpreter(Interpreter i){ protected LtNode() { public LtNode(issrg.pba.rbac.xmlpolicy.XMLPolicyParser p, org.xml.sax.Attributes attrs){| LtNode | Line # 56 | 5 | 2 | 77.8% |
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| 1 | /* | |
| 2 | * Copyright (c) 2000-2005, University of Salford | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions are met: | |
| 7 | * | |
| 8 | * Redistributions of source code must retain the above copyright notice, this | |
| 9 | * list of conditions and the following disclaimer. | |
| 10 | * | |
| 11 | * Redistributions in binary form must reproduce the above copyright notice, | |
| 12 | * this list of conditions and the following disclaimer in the documentation | |
| 13 | * and/or other materials provided with the distribution. | |
| 14 | * | |
| 15 | * Neither the name of the University of Salford nor the names of its | |
| 16 | * contributors may be used to endorse or promote products derived from this | |
| 17 | * software without specific prior written permission. | |
| 18 | * | |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
| 23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 29 | * POSSIBILITY OF SUCH DAMAGE. | |
| 30 | */ | |
| 31 | ||
| 32 | package issrg.pba.rbac.xmlpolicy.ifstatement; | |
| 33 | ||
| 34 | /** | |
| 35 | * This is the class for LT node of the IF-statement. Its functionality is | |
| 36 | * very much determined by OperationNode, which is | |
| 37 | * configured to deliver the following semantics: | |
| 38 | * | |
| 39 | * <p>This operation expects two and only two Terms of any type, and | |
| 40 | * returns a | |
| 41 | * value of type Types.BOOLEAN_TYPE. | |
| 42 | * The evaluation result is "true", if and only if there is an interpreter for | |
| 43 | * the required set of Terms, and it evaluates that the first Term is strictly | |
| 44 | * less than the second Term. | |
| 45 | * | |
| 46 | * <p>It is possible to register the interpreters for specific | |
| 47 | * combinations of Terms. Use registerInterpreter method to do that. There is no | |
| 48 | * default | |
| 49 | * Interpreter. | |
| 50 | * | |
| 51 | * @see #registerInterpreter | |
| 52 | * | |
| 53 | * @author A.Otenko | |
| 54 | */ | |
| 55 | ||
| 56 | public class LtNode extends OperationNode { | |
| 57 | public static final String LT_NODE = "LT"; | |
| 58 | ||
| 59 | /** | |
| 60 | * Call this method to register the node with the XMLPolicyParser. | |
| 61 | */ | |
| 62 | 21 |
public static void register(){ |
| 63 | 21 | try{ |
| 64 | 21 | issrg.pba.rbac.xmlpolicy.XMLPolicyParser.registerXMLNode(LT_NODE, LtNode.class); |
| 65 | }catch (NoSuchMethodException nsme){ | |
| 66 | 0 | nsme.printStackTrace(); |
| 67 | } | |
| 68 | } | |
| 69 | ||
| 70 | /** | |
| 71 | * This method maintains a register of interpreters for specific combinations | |
| 72 | * of Terms. If no special interpreters are registered, the evaluation error | |
| 73 | * occurs. The semantics of the interpreters should make sure that the first | |
| 74 | * Term is strictly less than the second Term in the array passed to the | |
| 75 | * evaluate method of that Interpreter. | |
| 76 | * | |
| 77 | * @param i - the Interpreter instance that can evaluate inequality expression | |
| 78 | * for some combination of Terms | |
| 79 | * | |
| 80 | * @see Interpreter#evaluate | |
| 81 | */ | |
| 82 | 63 |
public static void registerInterpreter(Interpreter i){ |
| 83 | 63 | OperationNode.registerInterpreterForNode(LT_NODE, i); |
| 84 | } | |
| 85 | ||
| 86 | 0 |
protected LtNode() { |
| 87 | } | |
| 88 | ||
| 89 | /** | |
| 90 | * This constructor builds a LtNode given the XMLPolicyParser and the set of | |
| 91 | * attributes of this XML element. It expects that there are two and only two | |
| 92 | * child nodes. | |
| 93 | * | |
| 94 | * @param p - the XMLPolicyParser that builds this LtNode | |
| 95 | * @param attr - the attributes of this XML element | |
| 96 | */ | |
| 97 | 8 |
public LtNode(issrg.pba.rbac.xmlpolicy.XMLPolicyParser p, org.xml.sax.Attributes attrs){ |
| 98 | 8 | super(LT_NODE, attrs, 2, 2); |
| 99 | } | |
| 100 | } | |
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