Groovy xml updating

Posted by / 25-Jan-2020 16:31

Groovy xml updating

Sql get Statement We noted earlier that to avoid SQL injection, we encourage you to use prepared statements, this is achieved using the variants of methods which take GStrings or a list of extra parameters.Prepared statements can be used in combination with batches as shown in the following example: This provides a much safer option if the data could come from a user such as via a script or a web form.Groovy continues these advances in ease of Java/XML integration.In this blog post, I look at how use of Groovy's Xml Slurper makes XML parsing refreshingly easy and almost transparent.Perhaps the most basic approach is to extract the metadata from any row as shown in the following example which examines the tablename, column names and column type names: Accessing metadata is quite common, so Groovy also provides variants to many of its methods that let you supply a closure that will be called once with the row metadata in addition to the normal row closure which is called for each row.The following example illustrates the two closure variant for def md = sql.Data assert md.driver Name == 'HSQL Database Engine Driver' assert md.database Product Version == '2.3.2' assert ['JDBCMajor Version', 'JDBCMinor Version'].collect == [4, 0] assert md.string Functions.tokenize(',').contains('CONCAT') def rs = Tables(null, null, 'AUTH%', null) assert rs.next() assert String('TABLE_NAME') == 'AUTHOR' Groovy supports some additional alternative placeholder syntax variants.Any '$' placeholders within the SQL are assumed to be placeholders.

Besides the non-trivial and often differently implemented DOM and SAX APIs, simply finding the correct version of Xerces (and later, Crimson) without having too many conflicting versions of that library was also a common problem.The following simple XML code will be used to demonstrate Groovy's Xml Slurper.The XML file for this example is called ) provides access to the XML content via familiar syntax.When the Groovy code above is executed, its results look like those shown in the following screen snapshot.The Groovy User Guide has a section devoted to coverage of Reading XML Using Groovy's Xml Slurper.

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This section points out additional issues related to using Groovy's Xml Slurper such as dealing with XML tag names that include hyphens (use double quotes around name with hyphen included) and namespace matching details.