Mercurial > paraspace
annotate docs/describe-data-struct.muse @ 75:9422a25e798d
Pass filename from argument list for dexfile.py
author | Thinker K.F. Li <thinker@codemud.net> |
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date | Tue, 12 Jul 2011 17:09:49 +0800 |
parents | e790c6b2d5d9 |
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e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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1 Data struct own some relation-ship or logics internally. Usually, |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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2 they are described in code spreaded over the project. The problem of |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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3 code is deattach relationships from the data struct. You don't see |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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4 the relationship with definition of data struct alone. You can also |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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5 not get the relationship from the code easily. So, we need a way |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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6 to describe relationship in the definition of data struct to attach |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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7 the information with data struct. |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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8 |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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9 Attaching relationship is not only easy to read, but also parse-able. |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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10 Relationships are attached a part of definition of data struct. They |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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11 are not code, it means more easy to be parsed. A lot of code can be |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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12 generated automatically by tools. |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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13 |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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14 Persisted data (in secondary storage) is usually a tree with reference |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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15 between branches while internal data struct is usually a group of |
e790c6b2d5d9
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Thinker K.F. Li <thinker@codemud.net>
parents:
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16 interconnected objects. We dont use persisted one directly because |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
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17 they are more hard to be used. You need extra-logic to travel |
e790c6b2d5d9
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Thinker K.F. Li <thinker@codemud.net>
parents:
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18 persisted data struct. We need the code to convert persisted data |
e790c6b2d5d9
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Thinker K.F. Li <thinker@codemud.net>
parents:
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19 struct to internal one and in reversed, but it is tedious. With a |
e790c6b2d5d9
doc for data struct description
Thinker K.F. Li <thinker@codemud.net>
parents:
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20 language to describe data struct with attaching relationship, we can |
e790c6b2d5d9
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Thinker K.F. Li <thinker@codemud.net>
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21 generate code for conversion of data struct from/to persisted to/from |
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22 internal ones. |
e790c6b2d5d9
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23 |
e790c6b2d5d9
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24 ** Construction |
e790c6b2d5d9
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25 |
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26 - types |
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27 - relationships |
e790c6b2d5d9
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28 - reference |
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29 - dependency |
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30 - constrain |
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31 - condition |
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32 - path |