| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| Term |
|
| 1.6666666666666667;1.667 |
| 1 | /* | |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more | |
| 3 | * contributor license agreements. See the NOTICE file distributed with | |
| 4 | * this work for additional information regarding copyright ownership. | |
| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 | |
| 6 | * (the "License"); you may not use this file except in compliance with | |
| 7 | * the License. You may obtain a copy of the License at | |
| 8 | * | |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | * | |
| 11 | * Unless required by applicable law or agreed to in writing, software | |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 | * See the License for the specific language governing permissions and | |
| 15 | * limitations under the License. | |
| 16 | */ | |
| 17 | ||
| 18 | package org.apache.any23.extractor.xpath; | |
| 19 | ||
| 20 | import org.openrdf.model.Value; | |
| 21 | ||
| 22 | import java.util.Map; | |
| 23 | ||
| 24 | /** | |
| 25 | * Represents a generic template term. | |
| 26 | * | |
| 27 | * @author Michele Mostarda (mostarda@fbk.eu) | |
| 28 | */ | |
| 29 | public abstract class Term<T extends Value> { | |
| 30 | ||
| 31 | /** | |
| 32 | * Internal value. | |
| 33 | */ | |
| 34 | private final String internalValue; | |
| 35 | ||
| 36 | /** | |
| 37 | * if true the #internalValue is a variable name, | |
| 38 | * otherwise is a constant. | |
| 39 | */ | |
| 40 | private final boolean isVar; | |
| 41 | ||
| 42 | /** | |
| 43 | * Constructor. | |
| 44 | * | |
| 45 | * @param internalValue internal term value. | |
| 46 | * @param isVar if true the <code>internalValue</code> is a variable name, | |
| 47 | * otherwise is a constant. | |
| 48 | */ | |
| 49 | 0 | protected Term(String internalValue, boolean isVar) { |
| 50 | 0 | this.internalValue = internalValue; |
| 51 | 0 | this.isVar = isVar; |
| 52 | 0 | } |
| 53 | ||
| 54 | /** | |
| 55 | * @return the internal value. | |
| 56 | */ | |
| 57 | public String getInternalValue() { | |
| 58 | 0 | return internalValue; |
| 59 | } | |
| 60 | ||
| 61 | /** | |
| 62 | * @return the isVar flag value. | |
| 63 | */ | |
| 64 | public boolean isVar() { | |
| 65 | 0 | return isVar; |
| 66 | } | |
| 67 | ||
| 68 | /** | |
| 69 | * Returns the value represented by this {@link Term} | |
| 70 | * given the <code>varMapping</code>, the #isVar and #internalValue | |
| 71 | * parameters. | |
| 72 | * | |
| 73 | * @param varMapping a map representing values of variables. | |
| 74 | * @return the value for this term. | |
| 75 | */ | |
| 76 | public T getValue(Map<String, String> varMapping) { | |
| 77 | final String value; | |
| 78 | 0 | if(isVar) { |
| 79 | 0 | value = varMapping.get(internalValue); |
| 80 | 0 | if(value == null) { |
| 81 | 0 | throw new IllegalStateException( |
| 82 | String.format("Cannot find a valid value for variable '%s'", internalValue) | |
| 83 | ); | |
| 84 | } | |
| 85 | } else { | |
| 86 | 0 | value = internalValue; |
| 87 | } | |
| 88 | 0 | return getValueInternal(value); |
| 89 | } | |
| 90 | ||
| 91 | protected abstract T getValueInternal(String value); | |
| 92 | ||
| 93 | @Override | |
| 94 | public String toString() { | |
| 95 | 0 | return isVar ? ( "?" + internalValue ) : internalValue; |
| 96 | } | |
| 97 | } |