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| 1 | +/* | |
| 2 | + * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package javax.management; | |
| 27 | + | |
| 28 | + | |
| 29 | +/** | |
| 30 | + * This class is used by the query-building mechanism to represent binary | |
| 31 | + * operations. | |
| 32 | + * @serial include | |
| 33 | + * | |
| 34 | + * @since 1.5 | |
| 35 | + */ | |
| 36 | +class BinaryRelQueryExp extends QueryEval implements QueryExp { | |
| 37 | + | |
| 38 | + /* Serial version */ | |
| 39 | + private static final long serialVersionUID = -5690656271650491000L; | |
| 40 | + | |
| 41 | + /** | |
| 42 | + * @serial The operator | |
| 43 | + */ | |
| 44 | + private int relOp; | |
| 45 | + | |
| 46 | + /** | |
| 47 | + * @serial The first value | |
| 48 | + */ | |
| 49 | + private ValueExp exp1; | |
| 50 | + | |
| 51 | + /** | |
| 52 | + * @serial The second value | |
| 53 | + */ | |
| 54 | + private ValueExp exp2; | |
| 55 | + | |
| 56 | + | |
| 57 | + /** | |
| 58 | + * Basic Constructor. | |
| 59 | + */ | |
| 60 | + public BinaryRelQueryExp() { | |
| 61 | + } | |
| 62 | + | |
| 63 | + /** | |
| 64 | + * Creates a new BinaryRelQueryExp with operator op applied on v1 and | |
| 65 | + * v2 values. | |
| 66 | + */ | |
| 67 | + public BinaryRelQueryExp(int op, ValueExp v1, ValueExp v2) { | |
| 68 | + relOp = op; | |
| 69 | + exp1 = v1; | |
| 70 | + exp2 = v2; | |
| 71 | + } | |
| 72 | + | |
| 73 | + | |
| 74 | + /** | |
| 75 | + * Returns the operator of the query. | |
| 76 | + */ | |
| 77 | + public int getOperator() { | |
| 78 | + return relOp; | |
| 79 | + } | |
| 80 | + | |
| 81 | + /** | |
| 82 | + * Returns the left value of the query. | |
| 83 | + */ | |
| 84 | + public ValueExp getLeftValue() { | |
| 85 | + return exp1; | |
| 86 | + } | |
| 87 | + | |
| 88 | + /** | |
| 89 | + * Returns the right value of the query. | |
| 90 | + */ | |
| 91 | + public ValueExp getRightValue() { | |
| 92 | + return exp2; | |
| 93 | + } | |
| 94 | + | |
| 95 | + /** | |
| 96 | + * Applies the BinaryRelQueryExp on an MBean. | |
| 97 | + * | |
| 98 | + * @param name The name of the MBean on which the BinaryRelQueryExp will be applied. | |
| 99 | + * | |
| 100 | + * @return True if the query was successfully applied to the MBean, false otherwise. | |
| 101 | + * | |
| 102 | + * @exception BadStringOperationException | |
| 103 | + * @exception BadBinaryOpValueExpException | |
| 104 | + * @exception BadAttributeValueExpException | |
| 105 | + * @exception InvalidApplicationException | |
| 106 | + */ | |
| 107 | + public boolean apply(ObjectName name) throws BadStringOperationException, BadBinaryOpValueExpException, | |
| 108 | + BadAttributeValueExpException, InvalidApplicationException { | |
| 109 | + Object val1 = exp1.apply(name); | |
| 110 | + Object val2 = exp2.apply(name); | |
| 111 | + boolean numeric = val1 instanceof NumericValueExp; | |
| 112 | + boolean bool = val1 instanceof BooleanValueExp; | |
| 113 | + if (numeric) { | |
| 114 | + if (((NumericValueExp)val1).isLong()) { | |
| 115 | + long lval1 = ((NumericValueExp)val1).longValue(); | |
| 116 | + long lval2 = ((NumericValueExp)val2).longValue(); | |
| 117 | + | |
| 118 | + switch (relOp) { | |
| 119 | + case Query.GT: | |
| 120 | + return lval1 > lval2; | |
| 121 | + case Query.LT: | |
| 122 | + return lval1 < lval2; | |
| 123 | + case Query.GE: | |
| 124 | + return lval1 >= lval2; | |
| 125 | + case Query.LE: | |
| 126 | + return lval1 <= lval2; | |
| 127 | + case Query.EQ: | |
| 128 | + return lval1 == lval2; | |
| 129 | + } | |
| 130 | + } else { | |
| 131 | + double dval1 = ((NumericValueExp)val1).doubleValue(); | |
| 132 | + double dval2 = ((NumericValueExp)val2).doubleValue(); | |
| 133 | + | |
| 134 | + switch (relOp) { | |
| 135 | + case Query.GT: | |
| 136 | + return dval1 > dval2; | |
| 137 | + case Query.LT: | |
| 138 | + return dval1 < dval2; | |
| 139 | + case Query.GE: | |
| 140 | + return dval1 >= dval2; | |
| 141 | + case Query.LE: | |
| 142 | + return dval1 <= dval2; | |
| 143 | + case Query.EQ: | |
| 144 | + return dval1 == dval2; | |
| 145 | + } | |
| 146 | + } | |
| 147 | + | |
| 148 | + } else if (bool) { | |
| 149 | + | |
| 150 | + boolean bval1 = ((BooleanValueExp)val1).getValue().booleanValue(); | |
| 151 | + boolean bval2 = ((BooleanValueExp)val2).getValue().booleanValue(); | |
| 152 | + | |
| 153 | + switch (relOp) { | |
| 154 | + case Query.GT: | |
| 155 | + return bval1 && !bval2; | |
| 156 | + case Query.LT: | |
| 157 | + return !bval1 && bval2; | |
| 158 | + case Query.GE: | |
| 159 | + return bval1 || !bval2; | |
| 160 | + case Query.LE: | |
| 161 | + return !bval1 || bval2; | |
| 162 | + case Query.EQ: | |
| 163 | + return bval1 == bval2; | |
| 164 | + } | |
| 165 | + | |
| 166 | + } else { | |
| 167 | + String sval1 = ((StringValueExp)val1).getValue(); | |
| 168 | + String sval2 = ((StringValueExp)val2).getValue(); | |
| 169 | + | |
| 170 | + switch (relOp) { | |
| 171 | + case Query.GT: | |
| 172 | + return sval1.compareTo(sval2) > 0; | |
| 173 | + case Query.LT: | |
| 174 | + return sval1.compareTo(sval2) < 0; | |
| 175 | + case Query.GE: | |
| 176 | + return sval1.compareTo(sval2) >= 0; | |
| 177 | + case Query.LE: | |
| 178 | + return sval1.compareTo(sval2) <= 0; | |
| 179 | + case Query.EQ: | |
| 180 | + return sval1.compareTo(sval2) == 0; | |
| 181 | + } | |
| 182 | + } | |
| 183 | + | |
| 184 | + return false; | |
| 185 | + } | |
| 186 | + | |
| 187 | + /** | |
| 188 | + * Returns the string representing the object. | |
| 189 | + */ | |
| 190 | + @Override | |
| 191 | + public String toString() { | |
| 192 | + return "(" + exp1 + ") " + relOpString() + " (" + exp2 + ")"; | |
| 193 | + } | |
| 194 | + | |
| 195 | + private String relOpString() { | |
| 196 | + switch (relOp) { | |
| 197 | + case Query.GT: | |
| 198 | + return ">"; | |
| 199 | + case Query.LT: | |
| 200 | + return "<"; | |
| 201 | + case Query.GE: | |
| 202 | + return ">="; | |
| 203 | + case Query.LE: | |
| 204 | + return "<="; | |
| 205 | + case Query.EQ: | |
| 206 | + return "="; | |
| 207 | + } | |
| 208 | + | |
| 209 | + return "="; | |
| 210 | + } | |
| 211 | + | |
| 212 | + } | |