Check if there is a file in the specified path.
1 file.exists
<file.exists>
<file /> !
</file.exists>
| Arguments | |||||
|---|---|---|---|---|---|
| Name | Type | Required | Unique | Nullable | Description |
| Efile | file | ||||
| Returns | |
|---|---|
| Type | Description |
| Boolean | Returns true if the file exist in the specified path. |
Example
Verify the existence of a file.
Copy
<xsql-script name='file_exists_sample1'>
<body>
<set name='m_path'>
<string>c:<file.separator />tmp<file.separator />source<file.separator />deister.txt</string>
</set>
<if>
<expr>
<file.exists>
<file name='#m_path' type='absolute' />
</file.exists>
</expr>
<then>
<set name='m_result'>existente</set>
</then>
<else>
<set name='m_result'>no encontrado</set>
</else>
</if>
<println>Fichero <m_path/> <m_result/></println>
</body>
</xsql-script>
Note that even when the function returns a Boolean value, the comparison of equality is ignored in the expression of the conditional statement and the condition is true if the label returns 1.