| 1 | /* |
| 2 | * Copyright 2007 brunella ltd |
| 3 | * |
| 4 | * Licensed under the LGPL Version 3 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * |
| 7 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 8 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 9 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 10 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 11 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 12 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 13 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 14 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 15 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 16 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| 17 | * THE POSSIBILITY OF SUCH DAMAGE. |
| 18 | */ |
| 19 | package sf.qof.parser; |
| 20 | |
| 21 | import java.util.ArrayList; |
| 22 | import java.util.Collections; |
| 23 | import java.util.Comparator; |
| 24 | import java.util.List; |
| 25 | |
| 26 | import sf.qof.exception.ValidationException; |
| 27 | |
| 28 | /** |
| 29 | * Helper class to combine partial definitions. |
| 30 | */ |
| 31 | public class PartialDefinitionCombiner { |
| 32 | |
| 33 | /** |
| 34 | * Combines partial definitions. |
| 35 | * |
| 36 | * @param definitionList a list of <code>Definition</code> objects. May contain partial definitions |
| 37 | * that will be combined |
| 38 | * @return a list of containing full definitions |
| 39 | * @throws sq.qof.exception.ValidationException if duplicate partial definitions are found |
| 40 | */ |
| 41 | public static List<? extends Definition> combine(List<? extends Definition> definitionList) { |
| 42 | List<Definition> partialDefinitions = new ArrayList<Definition>(); |
| 43 | List<Definition> fullDefinitions = new ArrayList<Definition>(); |
| 44 | |
| 45 | for (Definition definition : definitionList) { |
| 46 | if (definition.isPartialDefinition()) { |
| 47 | partialDefinitions.add(definition); |
| 48 | } else { |
| 49 | fullDefinitions.add(definition); |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | if (partialDefinitions.size() == 0) { |
| 54 | return definitionList; |
| 55 | } |
| 56 | |
| 57 | // sort the list |
| 58 | Collections.sort(partialDefinitions, new DefinitionComparator()); |
| 59 | |
| 60 | validatePartialDefinitions(partialDefinitions); |
| 61 | |
| 62 | int index = 0; |
| 63 | while (index < partialDefinitions.size()) { |
| 64 | Definition partialDefinition = partialDefinitions.get(index++); |
| 65 | if (partialDefinition.getPartialDefinitionPart() == 1) { |
| 66 | int numberOfParts = numberOfParts(partialDefinitions, index - 1); |
| 67 | if (partialDefinition instanceof ResultDefinition) { |
| 68 | ResultDefinition partialResultDefiniton = (ResultDefinition)partialDefinition; |
| 69 | ResultDefinitionImpl resultDefiniton = new ResultDefinitionImpl(); |
| 70 | resultDefiniton.setType(partialResultDefiniton.getType()); |
| 71 | resultDefiniton.setField(partialResultDefiniton.getField()); |
| 72 | resultDefiniton.setConstructorParameter(partialResultDefiniton.getConstructorParameter()); |
| 73 | resultDefiniton.setIsMapKey(partialResultDefiniton.isMapKey()); |
| 74 | if (partialResultDefiniton.getColumns() != null) { |
| 75 | String[] columns = new String[numberOfParts]; |
| 76 | resultDefiniton.setColumns(columns); |
| 77 | columns[0] = partialResultDefiniton.getColumns()[0]; |
| 78 | for (int i = 1; i < numberOfParts; i++) { |
| 79 | columns[i] = ((ResultDefinition)partialDefinitions.get(index++)).getColumns()[0]; |
| 80 | } |
| 81 | } else { |
| 82 | int[] indexes = new int[numberOfParts]; |
| 83 | resultDefiniton.setIndexes(indexes); |
| 84 | indexes[0] = partialResultDefiniton.getIndexes()[0]; |
| 85 | for (int i = 1; i < numberOfParts; i++) { |
| 86 | indexes[i] = ((ResultDefinition)partialDefinitions.get(index++)).getIndexes()[0]; |
| 87 | } |
| 88 | } |
| 89 | fullDefinitions.add(resultDefiniton); |
| 90 | } else { |
| 91 | ParameterDefinition partialParameterDefiniton = (ParameterDefinition)partialDefinition; |
| 92 | ParameterDefinitionImpl parameterDefiniton = new ParameterDefinitionImpl(); |
| 93 | parameterDefiniton.setType(partialParameterDefiniton.getType()); |
| 94 | parameterDefiniton.setField(partialParameterDefiniton.getField()); |
| 95 | parameterDefiniton.setNames(partialParameterDefiniton.getNames()); |
| 96 | parameterDefiniton.setParameter(partialParameterDefiniton.getParameter()); |
| 97 | int[] indexes = new int[numberOfParts]; |
| 98 | parameterDefiniton.setIndexes(indexes); |
| 99 | indexes[0] = partialParameterDefiniton.getIndexes()[0]; |
| 100 | for (int i = 1; i < numberOfParts; i++) { |
| 101 | indexes[i] = ((ParameterDefinition)partialDefinitions.get(index++)).getIndexes()[0]; |
| 102 | } |
| 103 | fullDefinitions.add(parameterDefiniton); |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | return fullDefinitions; |
| 109 | } |
| 110 | |
| 111 | private static int numberOfParts(List<Definition> list, int start) { |
| 112 | String type = makeEmptyIfNull(list.get(start).getType()); |
| 113 | String group = makeEmptyIfNull(list.get(start).getPartialDefinitionGroup()); |
| 114 | int i = 1; |
| 115 | while (i + start < list.size()) { |
| 116 | if (!type.equals(makeEmptyIfNull(list.get(start + i).getType())) || |
| 117 | !group.equals(makeEmptyIfNull(list.get(start + i).getPartialDefinitionGroup()))) { |
| 118 | break; |
| 119 | } |
| 120 | i++; |
| 121 | } |
| 122 | return i; |
| 123 | } |
| 124 | |
| 125 | private static String makeEmptyIfNull(String string) { |
| 126 | return string == null ? "" : string; |
| 127 | } |
| 128 | |
| 129 | private static void validatePartialDefinitions(List<Definition> partialDefinitions) { |
| 130 | DefinitionComparator comparator = new DefinitionComparator(); |
| 131 | Definition lastDefinition = partialDefinitions.get(0); |
| 132 | for (int i = 1; i < partialDefinitions.size(); i++) { |
| 133 | Definition currentDefinition = partialDefinitions.get(i); |
| 134 | if (comparator.compare(lastDefinition, currentDefinition) == 0 ) { |
| 135 | throw new ValidationException("Duplicate partial definition"); |
| 136 | } |
| 137 | lastDefinition = currentDefinition; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | private static class DefinitionComparator implements Comparator<Definition> { |
| 142 | public int compare(Definition o1, Definition o2) { |
| 143 | int cmp; |
| 144 | String type1 = o1.getType(); |
| 145 | String type2 = o2.getType(); |
| 146 | if (type1 != null) { |
| 147 | cmp = type1.compareTo(type2); |
| 148 | } else if (type2 != null) { |
| 149 | cmp = -type2.compareTo(type1); |
| 150 | } else { |
| 151 | cmp = 0; |
| 152 | } |
| 153 | if (cmp != 0) { |
| 154 | return cmp; |
| 155 | } |
| 156 | String group1 = o1.getPartialDefinitionGroup(); |
| 157 | String group2 = o2.getPartialDefinitionGroup(); |
| 158 | if (group1 != null) { |
| 159 | cmp = group1.compareTo(group2); |
| 160 | } else if (group2 != null) { |
| 161 | cmp = -group2.compareTo(group1); |
| 162 | } else { |
| 163 | cmp = 0; |
| 164 | } |
| 165 | if (cmp != 0) { |
| 166 | return cmp; |
| 167 | } |
| 168 | return o1.getPartialDefinitionPart() - o2.getPartialDefinitionPart(); |
| 169 | } |
| 170 | } |
| 171 | } |