78 lines
1.4 KiB
JavaScript
78 lines
1.4 KiB
JavaScript
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var Operation = require ('./operation');
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var Value = require ('./value');
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var Field = require ('./field');
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/**
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* Objects to be used as an operands of @Sql.Filter. It represents a two
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* expressions basic operation composed by a table column, the operator and the
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* value extracted from the rendering paramerers.
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*/
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module.exports = new Class
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({
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Extends: Operation
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,Tag: 'sql-filter-item'
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,Properties:
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{
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/**
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* The column name.
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*/
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field:
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{
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type: String,
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value: null
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},
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/**
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* The source table name or its alias if it has been specified.
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*/
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target:
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{
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type: String,
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value: null
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},
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/**
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* The parameter name.
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*/
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param:
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{
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type: String,
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value: null
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}
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}
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/**
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* Checks if parameter name haa been defined and if it has a value.
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*/
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,isReady: function (params)
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{
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return this.param != null && params != null && params[this.param] != null;
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}
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,render: function (params)
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{
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var newOp = new Operation ({type: this.type});
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newOp.push (new Field ({
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name: this.field,
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target: this.target
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}));
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var value = params[this.param];
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if (this.type === Operation.Type.LIKE && typeof value === 'string')
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{
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value = value.replace (/[\%\?]/g, this._escapeChar);
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value = value.replace (/^|\s+|$/g, '%');
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}
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newOp.push (new Value ({value: value}));
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return newOp.render (params);
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}
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,_escapeChar: function (char)
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{
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return '\\'+ char;
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}
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});
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