[271] | 1 | import au.com.bytecode.opencsv.CSVWriter |
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| 2 | import au.com.bytecode.opencsv.CSVReader |
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| 3 | |
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| 4 | /** |
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| 5 | * Provides some csv import/export methods. |
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| 6 | * Requires the opencsv jar to be available which is included in the grails-export plugin. |
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| 7 | */ |
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| 8 | class CsvService { |
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| 9 | |
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| 10 | boolean transactional = false |
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| 11 | |
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| 12 | /** |
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[287] | 13 | * Import an asset tree creating items as required. |
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| 14 | * @param request The http request to run getFile against. |
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| 15 | * Get file should return a csv format file containing the asset tree as per template. |
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[271] | 16 | */ |
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| 17 | def importAssetTree(request) { |
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[290] | 18 | Asset.withTransaction { status -> |
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| 19 | def result = [:] |
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[271] | 20 | |
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[300] | 21 | def kByteMultiplier = 1000 |
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| 22 | def fileMaxSize = 500 * kByteMultiplier |
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[271] | 23 | |
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[290] | 24 | def multiPartFile = request.getFile('file') |
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[287] | 25 | |
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[290] | 26 | InputStreamReader sr = new InputStreamReader(multiPartFile.inputStream) |
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| 27 | CSVReader reader = new CSVReader(sr) |
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[287] | 28 | |
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[290] | 29 | def fail = { Map m -> |
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| 30 | status.setRollbackOnly() |
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| 31 | reader.close() |
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| 32 | result.error = [ code: m.code, args: m.args ] |
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| 33 | return result |
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| 34 | } |
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[271] | 35 | |
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[290] | 36 | if(!multiPartFile || multiPartFile.isEmpty()) |
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| 37 | return fail(code: "asset.tree.import.file.not.supplied") |
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[271] | 38 | |
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[290] | 39 | if (multiPartFile.getSize() > fileMaxSize) |
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[300] | 40 | return fail(code: "asset.tree.import.file.over.max.size", args: [fileMaxSize/kByteMultiplier, "kB"]) |
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[271] | 41 | |
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[300] | 42 | def columnIndex = 0 |
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| 43 | def numberOfColumns = 0 |
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| 44 | def maxNumberOfColumns = 20 |
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| 45 | |
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| 46 | // Get first line. |
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[290] | 47 | def line = reader.readNext() |
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| 48 | def lineNumber = 1 |
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[271] | 49 | |
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[300] | 50 | // Check for header line 1. |
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| 51 | if(line != templateHeaderLine1) { |
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| 52 | log.error "Failed to find header line 1. " |
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| 53 | log.error "Required: " + templateHeaderLine1.toString() |
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| 54 | log.error "Supplied: " + line.toString() |
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| 55 | return fail(code: "asset.tree.import.no.header") |
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| 56 | } |
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[287] | 57 | |
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[300] | 58 | // Get second line. |
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| 59 | line = reader.readNext() |
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| 60 | lineNumber ++ |
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| 61 | |
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| 62 | // Check for header line 2. |
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| 63 | if(line != templateHeaderLine2) { |
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| 64 | log.error "Failed to find header line 2. " |
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| 65 | log.error "Required: " + templateHeaderLine2.toString() |
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| 66 | log.error "Supplied: " + line.toString() |
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[290] | 67 | return fail(code: "asset.tree.import.no.header") |
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[300] | 68 | } |
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[271] | 69 | |
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[290] | 70 | log.info "Import checks passed, start processing asset file." |
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[287] | 71 | |
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[290] | 72 | // Prepare the first body line. |
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| 73 | line = reader.readNext() |
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| 74 | lineNumber ++ |
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[271] | 75 | |
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[290] | 76 | def siteInstance |
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[300] | 77 | def departmentInstance |
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[290] | 78 | def sectionInstance |
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| 79 | def assetInstance |
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[300] | 80 | def assetSubItemInstance |
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| 81 | def parentItem |
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[271] | 82 | |
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[290] | 83 | while(line) { |
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[300] | 84 | columnIndex = 0 |
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| 85 | numberOfColumns = Math.min( line.size(), maxNumberOfColumns ) |
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[271] | 86 | |
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[300] | 87 | if( (columnIndex+2) > numberOfColumns ) { |
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| 88 | line = reader.readNext() |
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| 89 | lineNumber ++ |
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| 90 | continue |
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[290] | 91 | } |
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[271] | 92 | |
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[300] | 93 | if(line[columnIndex]) { |
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| 94 | siteInstance = Site.findByName(line[columnIndex]) |
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| 95 | if(!siteInstance) { |
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| 96 | log.info "Creating site: " + line[columnIndex] |
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| 97 | siteInstance = new Site(name: line[columnIndex], |
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| 98 | description: line[++columnIndex]) |
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| 99 | if(!siteInstance.save()) { |
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| 100 | log.error "Failed to create site on line: " + line[--columnIndex] + "(" + lineNumber + ")" |
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| 101 | return fail(code: "asset.tree.import.failure", args: [lineNumber]) |
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| 102 | } |
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| 103 | } |
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| 104 | else log.info "Existing site: " + siteInstance |
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[271] | 105 | |
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[300] | 106 | columnIndex++ |
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| 107 | if( (columnIndex+2) > numberOfColumns ) { |
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| 108 | line = reader.readNext() |
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| 109 | lineNumber ++ |
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| 110 | continue |
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| 111 | } |
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| 112 | |
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| 113 | if(line[columnIndex]) { |
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| 114 | departmentInstance = Department.findByName(line[columnIndex]) |
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| 115 | if(!departmentInstance) { |
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| 116 | departmentInstance = new Department(name: line[columnIndex], |
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| 117 | description: line[++columnIndex], |
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| 118 | site: siteInstance) |
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| 119 | if(!departmentInstance.save()) { |
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| 120 | log.error "Failed to create department on line: " + line[--columnIndex] + "(" + lineNumber + ")" |
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[290] | 121 | return fail(code: "asset.tree.import.failure", args: [lineNumber]) |
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[300] | 122 | } |
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| 123 | } |
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[290] | 124 | |
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[300] | 125 | columnIndex++ |
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| 126 | if( (columnIndex+2) > numberOfColumns ) { |
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| 127 | line = reader.readNext() |
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| 128 | lineNumber ++ |
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| 129 | continue |
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| 130 | } |
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| 131 | |
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| 132 | if(line[columnIndex]) { |
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| 133 | sectionInstance = Section.findByName(line[columnIndex]) |
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| 134 | if(!sectionInstance) { |
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| 135 | sectionInstance = new Section(name: line[columnIndex], |
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| 136 | description: line[++columnIndex], |
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| 137 | site: siteInstance, |
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| 138 | department: departmentInstance) |
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| 139 | if(!sectionInstance.save()) { |
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| 140 | log.error "Failed to create section on line: " + line[--columnIndex] + "(" + lineNumber + ")" |
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| 141 | return fail(code: "asset.tree.import.failure", args: [lineNumber]) |
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| 142 | } |
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| 143 | } |
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| 144 | |
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| 145 | columnIndex++ |
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| 146 | if( (columnIndex+2) > numberOfColumns ) { |
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| 147 | line = reader.readNext() |
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| 148 | lineNumber ++ |
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| 149 | continue |
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| 150 | } |
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| 151 | |
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| 152 | if(line[columnIndex]) { |
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| 153 | assetInstance = Asset.findByName(line[columnIndex]) |
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| 154 | if(!assetInstance) { |
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| 155 | assetInstance = new Asset(name: line[columnIndex], |
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| 156 | description: line[++columnIndex], |
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| 157 | section: sectionInstance) |
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| 158 | if(!assetInstance.save()) { |
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| 159 | log.error "Failed to create asset on line: " + line[--columnIndex] + "(" + lineNumber + ")" |
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| 160 | return fail(code: "asset.tree.import.failure", args: [lineNumber]) |
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| 161 | } |
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| 162 | } |
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| 163 | |
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| 164 | columnIndex++ |
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| 165 | if( (columnIndex+2) > numberOfColumns ) { |
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| 166 | line = reader.readNext() |
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| 167 | lineNumber ++ |
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| 168 | continue |
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| 169 | } |
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| 170 | |
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| 171 | if(line[columnIndex]) { |
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| 172 | assetSubItemInstance = AssetSubItem.findByName(line[columnIndex]) |
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| 173 | if(!assetSubItemInstance) { |
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| 174 | assetSubItemInstance = new AssetSubItem(name: line[columnIndex], |
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| 175 | description: line[++columnIndex]) |
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| 176 | if(!assetInstance.save()) { |
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| 177 | log.error "Failed to create assetSubItem on line: " + line[--columnIndex] + "(" + lineNumber + ")" |
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| 178 | return fail(code: "asset.tree.import.failure", args: [lineNumber]) |
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| 179 | } |
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| 180 | } |
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| 181 | |
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| 182 | assetInstance.addToAssetSubItems(assetSubItemInstance) |
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| 183 | |
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| 184 | columnIndex++ |
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| 185 | if( (columnIndex+2) > numberOfColumns ) { |
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| 186 | line = reader.readNext() |
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| 187 | lineNumber ++ |
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| 188 | continue |
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| 189 | } |
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| 190 | |
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| 191 | while( (columnIndex+2) < numberOfColumns ) { |
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| 192 | |
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| 193 | if(line[columnIndex]) { |
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| 194 | parentItem = assetSubItemInstance |
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| 195 | assetSubItemInstance = new AssetSubItem(name: line[columnIndex], |
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| 196 | description: line[++columnIndex], |
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| 197 | parentItem: parentItem) |
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| 198 | if(!assetInstance.save()) { |
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| 199 | log.error "Failed to create assetSubItem on line: " + line[--columnIndex] + "(" + lineNumber + ")" |
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| 200 | return fail(code: "asset.tree.import.failure", args: [lineNumber]) |
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| 201 | } |
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| 202 | } |
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| 203 | else break |
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| 204 | |
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| 205 | columnIndex++ |
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| 206 | } // while() |
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| 207 | |
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| 208 | } // AssetSubItem L1 |
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| 209 | } // Asset |
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| 210 | } // Section |
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| 211 | } // Department |
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| 212 | } // Site |
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| 213 | |
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[290] | 214 | line = reader.readNext() |
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| 215 | lineNumber ++ |
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| 216 | } //while(line) |
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| 217 | |
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| 218 | // Success. |
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| 219 | reader.close() |
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| 220 | return result |
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| 221 | |
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| 222 | } //end withTransaction |
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[271] | 223 | } // end importAssetTree() |
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| 224 | |
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| 225 | /** |
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| 226 | * Build an asset tree template csv file. |
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| 227 | * This template can then be populated for import. |
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| 228 | * @returns The template as a String in csv format. |
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| 229 | */ |
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| 230 | def buildAssetTreeTemplate() { |
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| 231 | |
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| 232 | StringWriter sw = new StringWriter() |
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| 233 | CSVWriter writer = new CSVWriter(sw) |
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| 234 | |
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[300] | 235 | writer.writeNext(templateHeaderLine1 as String[]) |
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| 236 | writer.writeNext(templateHeaderLine2 as String[]) |
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| 237 | writer.writeNext() |
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| 238 | writer.writeNext("Note: the header lines are required, start by replacing this line.") |
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[287] | 239 | |
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[271] | 240 | writer.close() |
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| 241 | return sw.toString() |
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| 242 | } |
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| 243 | |
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| 244 | /** |
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| 245 | * Build complete asset trees for export. |
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| 246 | * @param assetList The list of assets to build and export trees for. |
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| 247 | * @returns The tree as a String in csv format. |
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| 248 | */ |
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| 249 | def buildAssetTree(List assetList) { |
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| 250 | |
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| 251 | StringWriter sw = new StringWriter() |
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| 252 | CSVWriter writer = new CSVWriter(sw) |
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| 253 | |
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| 254 | //Header |
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| 255 | def header = ["Site", "Section", "Asset", "Sub Asset", "Functional Assembly", "Sub Assembly Group"] |
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| 256 | writer.writeNext(header as String[]) |
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| 257 | |
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| 258 | //Rows |
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| 259 | def row |
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| 260 | |
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| 261 | def writeAssetSubItem4 = { assetSubItem -> |
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| 262 | row.add(assetSubItem) |
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| 263 | writer.writeNext(row as String[]) |
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| 264 | } |
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| 265 | |
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| 266 | def writeAssetSubItem3 = { assetSubItem -> |
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| 267 | row.add(assetSubItem) |
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| 268 | |
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| 269 | if(assetSubItem.subItems.size() > 0) { |
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| 270 | assetSubItem.subItems.sort { p1, p2 -> p1.name.compareToIgnoreCase(p2.name) }.each() { assetSubItem4 -> |
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| 271 | writeAssetSubItem4(assetSubItem4) |
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| 272 | row.remove(row.last()) |
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| 273 | } |
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| 274 | } |
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| 275 | else { |
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| 276 | writer.writeNext(row as String[]) |
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| 277 | } |
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| 278 | |
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| 279 | } |
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| 280 | |
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| 281 | def writeAssetSubItem2 = { assetSubItem -> |
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| 282 | row.add(assetSubItem) |
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| 283 | |
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| 284 | if(assetSubItem.subItems.size() > 0) { |
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| 285 | assetSubItem.subItems.sort { p1, p2 -> p1.name.compareToIgnoreCase(p2.name) }.each() { assetSubItem3 -> |
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| 286 | writeAssetSubItem3(assetSubItem3) |
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| 287 | row.remove(row.last()) |
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| 288 | } |
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| 289 | } |
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| 290 | else { |
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| 291 | writer.writeNext(row as String[]) |
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| 292 | } |
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| 293 | |
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| 294 | } |
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| 295 | |
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| 296 | def writeAssetSubItem1 = { assetSubItem -> |
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| 297 | row.add(assetSubItem) |
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| 298 | |
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| 299 | if(assetSubItem.subItems.size() > 0) { |
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| 300 | assetSubItem.subItems.sort { p1, p2 -> p1.name.compareToIgnoreCase(p2.name) }.each() { assetSubItem2 -> |
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| 301 | writeAssetSubItem2(assetSubItem2) |
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| 302 | row.remove(row.last()) |
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| 303 | } |
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| 304 | } |
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| 305 | else { |
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| 306 | writer.writeNext(row as String[]) |
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| 307 | } |
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| 308 | |
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| 309 | } |
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| 310 | |
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| 311 | assetList.sort { p1, p2 -> p1.name.compareToIgnoreCase(p2.name) }.each() { asset -> |
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| 312 | row = [] |
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| 313 | writer.writeNext(row as String[]) //blank row between assets. |
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| 314 | row.add(asset.section.site) |
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| 315 | row.add(asset.section) |
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| 316 | row.add(asset.name) |
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| 317 | |
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| 318 | if(asset.assetSubItems.size() > 0) { |
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| 319 | asset.assetSubItems.each() { assetSubItem1 -> |
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| 320 | writeAssetSubItem1(assetSubItem1) |
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| 321 | row.remove(row.last()) |
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| 322 | } |
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| 323 | } |
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| 324 | else { |
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| 325 | writer.writeNext(row as String[]) |
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| 326 | } |
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| 327 | |
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| 328 | } |
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| 329 | |
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| 330 | writer.close() |
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| 331 | return sw.toString() |
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| 332 | } // end buildAssetTree |
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| 333 | |
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[300] | 334 | private getTemplateHeaderLine1() { |
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| 335 | ["Site", "", "Department", "", "Section", "","Asset", "", "Sub Asset", "", "Functional Assembly", "", "Sub Assembly Group", "", "SubItem", ""] |
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| 336 | } |
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| 337 | |
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| 338 | private getTemplateHeaderLine2() { |
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| 339 | (["Name", "Description"])*8 |
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| 340 | } |
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| 341 | |
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[271] | 342 | } // end class |
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