Package org.apache.derby.iapi.util
Class PropertyUtil
java.lang.Object
org.apache.derby.iapi.util.PropertyUtil
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic void
copyProperties
(Properties src_prop, Properties dest_prop) Copy a set of properties from one Property to another.static void
loadWithTrimmedValues
(InputStream iStr, Properties prop) Read a set of properties from the received input stream, strip off any excess white space that exists in those property values, and then add those newly-read properties to the received Properties object; not explicitly removing the whitespace here can lead to problems.static String
sortProperties
(Properties list) Sorts a property list and turns the sorted list into a string.static String
sortProperties
(Properties list, String indent) Sorts property list and print out each key=value pair prepended with specific indentation.
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Constructor Details
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PropertyUtil
public PropertyUtil()
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Method Details
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sortProperties
Sorts a property list and turns the sorted list into a string.- Parameters:
list
- property list to sort- Returns:
- a string version of the sorted list
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sortProperties
Sorts property list and print out each key=value pair prepended with specific indentation. If indent is null, do not prepend with indentation. The output string shows up in two styles, style 1 looks like { key1=value1, key2=value2, key3=value3 } style 2 looks like key1=value1 key2=value2 key3=value3 where indent goes between the new line and the keys To get style 1, pass in a null indent To get sytle 2, pass in non-null indent (whatever you want to go before the key value) -
copyProperties
Copy a set of properties from one Property to another.- Parameters:
src_prop
- Source set of properties to copy from.dest_prop
- Dest Properties to copy into.
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loadWithTrimmedValues
Read a set of properties from the received input stream, strip off any excess white space that exists in those property values, and then add those newly-read properties to the received Properties object; not explicitly removing the whitespace here can lead to problems. This method exists because of the manner in which the jvm reads properties from file--extra spaces are ignored after a _key_, but if they exist at the _end_ of a property decl line (i.e. as part of a _value_), they are preserved, as outlined in the Java API: "Any whitespace after the key is skipped; if the first non- whitespace character after the key is = or :, then it is ignored and any whitespace characters after it are also skipped. All remaining characters on the line become part of the associated element string."- Parameters:
iStr
- An input stream from which the new properties are to be loaded (should already be initialized).prop
- A set of properties to which the properties from iStr will be added (should already be initialized). properties loaded from 'iStr' (with the extra whitespace (if any) removed from all values), will be returned via the parameter.- Throws:
IOException
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