Mercurial > repos > shellac > guppy_basecaller
annotate env/lib/python3.7/site-packages/schema_salad/metaschema/import_include.md @ 0:26e78fe6e8c4 draft
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author | shellac |
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date | Sat, 02 May 2020 07:14:21 -0400 |
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1 ## Import |
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2 |
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3 During preprocessing traversal, an implementation must resolve `$import` |
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4 directives. An `$import` directive is an object consisting of exactly one |
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5 field `$import` specifying resource by URI string. It is an error if there |
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6 are additional fields in the `$import` object, such additional fields must |
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7 be ignored. |
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8 |
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9 The URI string must be resolved to an absolute URI using the link |
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10 resolution rules described previously. Implementations must support |
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11 loading from `file`, `http` and `https` resources. The URI referenced by |
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12 `$import` must be loaded and recursively preprocessed as a Salad document. |
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13 The external imported document does not inherit the context of the |
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14 importing document, and the default base URI for processing the imported |
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15 document must be the URI used to retrieve the imported document. If the |
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16 `$import` URI includes a document fragment, the fragment must be excluded |
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17 from the base URI used to preprocess the imported document. |
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18 |
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19 Once loaded and processed, the `$import` node is replaced in the document |
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20 structure by the object or array yielded from the import operation. |
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21 |
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22 URIs may reference document fragments which refer to specific an object in |
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23 the target document. This indicates that the `$import` node must be |
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24 replaced by only the object with the appropriate fragment identifier. |
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25 |
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26 It is a fatal error if an import directive refers to an external resource |
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27 or resource fragment which does not exist or is not accessible. |
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28 |
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29 ### Import example |
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30 |
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31 import.yml: |
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32 ``` |
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33 { |
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34 "hello": "world" |
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35 } |
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36 |
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37 ``` |
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38 |
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39 parent.yml: |
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40 ``` |
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41 { |
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42 "form": { |
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43 "bar": { |
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44 "$import": "import.yml" |
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45 } |
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46 } |
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47 } |
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48 |
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49 ``` |
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50 |
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51 This becomes: |
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52 |
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53 ``` |
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54 { |
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55 "form": { |
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56 "bar": { |
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57 "hello": "world" |
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58 } |
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59 } |
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60 } |
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61 ``` |
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62 |
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63 ## Include |
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64 |
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65 During preprocessing traversal, an implementation must resolve `$include` |
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66 directives. An `$include` directive is an object consisting of exactly one |
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67 field `$include` specifying a URI string. It is an error if there are |
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68 additional fields in the `$include` object, such additional fields must be |
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69 ignored. |
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70 |
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71 The URI string must be resolved to an absolute URI using the link |
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72 resolution rules described previously. The URI referenced by `$include` must |
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73 be loaded as a text data. Implementations must support loading from |
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74 `file`, `http` and `https` resources. Implementations may transcode the |
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75 character encoding of the text data to match that of the parent document, |
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76 but must not interpret or parse the text document in any other way. |
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77 |
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78 Once loaded, the `$include` node is replaced in the document structure by a |
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79 string containing the text data loaded from the resource. |
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80 |
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81 It is a fatal error if an import directive refers to an external resource |
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82 which does not exist or is not accessible. |
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83 |
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84 ### Include example |
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85 |
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86 parent.yml: |
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87 ``` |
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88 { |
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89 "form": { |
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90 "bar": { |
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91 "$include": "include.txt" |
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92 } |
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93 } |
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94 } |
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95 |
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96 ``` |
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97 |
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98 include.txt: |
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99 ``` |
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100 hello world |
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101 |
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102 ``` |
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103 |
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104 This becomes: |
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105 |
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106 ``` |
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107 { |
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108 "form": { |
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109 "bar": "hello world" |
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110 } |
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111 } |
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112 ``` |