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Original file line number | Diff line number | Diff line change |
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'use strict'; | ||
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const PrepareWrapper = require('./prepare-wrapper'); | ||
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/** | ||
* Prepare cache wrapper | ||
* see https://mariadb.com/kb/en/com_stmt_prepare/#com_stmt_prepare_ok | ||
*/ | ||
class PrepareCacheWrapper { | ||
#use = 0; | ||
#cached; | ||
#prepare; | ||
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constructor(prepare) { | ||
this.#prepare = prepare; | ||
this.#cached = true; | ||
} | ||
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incrementUse() { | ||
this.#use += 1; | ||
return new PrepareWrapper(this, this.#prepare); | ||
} | ||
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unCache() { | ||
this.#cached = false; | ||
if (this.#use === 0) { | ||
this.#prepare.close(); | ||
} | ||
} | ||
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decrementUse() { | ||
this.#use -= 1; | ||
if (this.#use === 0 && !this.#cached) { | ||
this.#prepare.close(); | ||
} | ||
} | ||
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toString() { | ||
return 'Prepare{use:' + this.#use + ',cached:' + this.#cached + '}'; | ||
} | ||
} | ||
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module.exports = PrepareCacheWrapper; |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,67 @@ | ||
'use strict'; | ||
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/** | ||
* Prepare result wrapper | ||
* This permit to ensure that cache can be close only one time cache. | ||
*/ | ||
class PrepareWrapper { | ||
#closed = false; | ||
#cacheWrapper; | ||
#prepare; | ||
#conn; | ||
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constructor(cacheWrapper, prepare) { | ||
this.#cacheWrapper = cacheWrapper; | ||
this.#prepare = prepare; | ||
this.#conn = prepare.conn; | ||
this.execute = this.#prepare.execute; | ||
this.executeStream = this.#prepare.executeStream; | ||
} | ||
get conn() { | ||
return this.#conn; | ||
} | ||
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get id() { | ||
return this.#prepare.id; | ||
} | ||
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get parameterCount() { | ||
return this.#prepare.parameterCount; | ||
} | ||
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get _placeHolderIndex() { | ||
return this.#prepare._placeHolderIndex; | ||
} | ||
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get columns() { | ||
return this.#prepare.columns; | ||
} | ||
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set columns(columns) { | ||
this.#prepare.columns = columns; | ||
} | ||
get database() { | ||
return this.#prepare.database; | ||
} | ||
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get query() { | ||
return this.#prepare.query; | ||
} | ||
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isClose() { | ||
return this.#closed; | ||
} | ||
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close() { | ||
if (!this.#closed) { | ||
this.#closed = true; | ||
this.#cacheWrapper.decrementUse(); | ||
} | ||
} | ||
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toString() { | ||
return 'PrepareWrapper{closed:' + this.#closed + ',cache:' + this.#cacheWrapper + '}'; | ||
} | ||
} | ||
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module.exports = PrepareWrapper; |
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