Package com.tangosol.run.xml

Class XmlHelper

  • public abstract class XmlHelper
extends Base
    This abstract class contains XML manipulation methods.
    Author:
    cp/gg 2000.10.25

    • Field Detail

      • XML_ATTR_SCHEMA_LOCATION

        public static final String XML_ATTR_SCHEMA_LOCATION
        The XML attribute used to specify schema locations.
        See Also:
        Constant Field Values

      • XML_ATTR_XMLNS

        public static final String XML_ATTR_XMLNS
        The XML attribute name used to specify xml schema.
        See Also:
        Constant Field Values

    • Constructor Detail

      • XmlHelper

        public XmlHelper()

    • Method Detail

      • loadXml

        public static XmlDocument loadXml​(Class clz)
        Load XML from a file for a class.
        Parameters:
        clz - the class for which to load the XML
        Returns:
        the XML content or null

      • loadXml

        public static XmlDocument loadXml​(Class clz,
                                  String sCharset)
        Load XML from a file for a class using a given charset.
        Parameters:
        clz - the class for which to load the XML
        sCharset - the charset name; pass null to use the default charset
        Returns:
        the XML content or null

      • loadXml

        public static XmlDocument loadXml​(Class clz,
                                  String sName,
                                  String sCharset)
        Load XML from a file that is collocated with the specified class with a given charset.
        Parameters:
        clz - the class for which to load the XML
        sName - the XML file name (including extension if any) that exists in the package from which the class was loaded
        sCharset - the charset name; pass null to use the default charset
        Returns:
        the XML content or null

      • loadXml

        public static XmlDocument loadXml​(InputStream stream)
        Load XML from a stream.
        Parameters:
        stream - the InputStream object
        Returns:
        the XML content

      • loadXml

        public static XmlDocument loadXml​(InputStream stream,
                                  String sCharset)
        Load XML from a stream using the specified charset.
        Parameters:
        stream - the InputStream object
        sCharset - the charset name
        Returns:
        the XML content

      • loadXml

        public static XmlDocument loadXml​(URL url)
        Load the XML from the specified url using the default character set.
        Parameters:
        url - the url from which to load the XML
        Returns:
        the XML content

      • loadXml

        public static XmlDocument loadXml​(URL url,
                                  String sCharset)
        Load the XML from the specified url using the specified character set.
        Parameters:
        url - the url from which to load the XML
        sCharset - the charset name
        Returns:
        the XML content

      • loadXml

        public static XmlDocument loadXml​(String sXml)
        Load XML from a string.
        Parameters:
        sXml - the string containing an XML
        Returns:
        the XML content

      • loadXml

        public static void loadXml​(String sXml,
                           XmlDocument xmlRoot)
        Load XML from a String into the specified XmlElement.
        Parameters:
        sXml - the string containing an XML
        xmlRoot - the root XmlElement to parse the string into

      • loadXml

        public static void loadXml​(String sXml,
                           XmlDocument xmlRoot,
                           boolean fValidate)
        Load XML from a String into the specified XmlElement.
        Parameters:
        sXml - the string containing an XML
        xmlRoot - the root XmlElement to parse the string into
        fValidate - whether to validate the loaded XML
        Since:
        14.1.1.0

      • loadResource

        public static XmlDocument loadResource​(String sName,
                                       String sDescr)
        Load the configuration from a resource.
        Parameters:
        sName - the name of the resource
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        Returns:
        the configuration XML

      • loadResource

        public static XmlDocument loadResource​(String sName,
                                       String sDescr,
                                       ClassLoader loader)
        Load the configuration from resource.
        Parameters:
        sName - the name of the resource
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        loader - (optional) ClassLoader that should be used to load the configuration resource
        Returns:
        the configuration XML

      • loadResource

        public static XmlDocument loadResource​(URL url,
                                       String sDescr,
                                       ClassLoader loader)
        Load the configuration from a URL resource.
        Parameters:
        url - the resource URL
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        loader - (optional) ClassLoader that should be used to load the configuration resource
        Returns:
        the configuration XML

      • loadFileOrResource

        public static XmlDocument loadFileOrResource​(String sName,
                                             String sDescr)
        Load the configuration from a file or resource.
        Parameters:
        sName - the name of the file or resource
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        Returns:
        the configuration XML

      • loadFileOrResource

        public static XmlDocument loadFileOrResource​(String sName,
                                             String sDescr,
                                             ClassLoader loader)
        Load the configuration from a file or resource.
        Parameters:
        sName - the name of the file or resource
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        loader - (optional) ClassLoader that should be used to load the configuration resource
        Returns:
        the configuration XML

      • loadFileOrResourceOrDefault

        public static XmlDocument loadFileOrResourceOrDefault​(String sName,
                                                      String sDescr,
                                                      ClassLoader loader)
        Load the configuration from a file or resource.
        Parameters:
        sName - the name of the file or resource
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        loader - (optional) ClassLoader that should be used to load the configuration resource
        Returns:
        the configuration XML

      • loadFileOrResource

        public static XmlDocument loadFileOrResource​(String sName,
                                             String sDescr,
                                             ClassLoader loader,
                                             boolean fWarnNoSchema)
        Load the configuration from a file or resource.
        Parameters:
        sName - the name of the file or resource
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        loader - (optional) ClassLoader that should be used to load the configuration resource
        fWarnNoSchema - display warning if schema is missing
        Returns:
        the configuration XML

      • loadResourceInternal

        protected static XmlDocument loadResourceInternal​(String sName,
                                                  String sDescr,
                                                  ClassLoader loader,
                                                  boolean fFile,
                                                  boolean fWarnNoSchema,
                                                  boolean fDefault)
        Load the configuration from a file or resource.
        Parameters:
        sName - the name of the file or resource
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        loader - (optional) ClassLoader that should be used to load the configuration resource
        fFile - true if the specified name could refer to a file
        fWarnNoSchema - display warning if schema is missing
        fDefault - try to locate the resource in the default location if it cannot be found
        Returns:
        the configuration XML

      • loadResourceInternal

        protected static XmlDocument loadResourceInternal​(URL url,
                                                  String sDescr,
                                                  boolean fWarnNoSchema)
        Load the configuration from a URL.

        Note: The default character set is used to load configurations provided in files; otherwise the character set "ISO-8859-1" is used.

        Parameters:
        url - the file or resource URL
        sDescr - a description of the resource being loaded (e.g. "cache configuration"). The description is only used in logging and error messages related to loading the resource
        fWarnNoSchema - display warning if schema is missing
        Returns:
        the configuration XML

      • isEncodingValid

        public static boolean isEncodingValid​(String sEncoding)
        Validate the passed encoding. Encodings are latin strings defined as: [A-Za-z] ([A-Za-z0-9._] | '-')*
        Parameters:
        sEncoding - the document encoding
        Returns:
        true if the encoding is valid, false otherwise

      • isSystemIdentifierValid

        public static boolean isSystemIdentifierValid​(String sName)
        Validate the passed system identifier.
        Parameters:
        sName - the system identifier of the XML document
        Returns:
        true if the identifier is valid, false otherwise

      • isPublicIdentifierValid

        public static boolean isPublicIdentifierValid​(String sName)
        Validate the passed public identifier.
        Parameters:
        sName - the public identifier of the XML document
        Returns:
        true if the identifier is valid, false otherwise

      • isCommentValid

        public static boolean isCommentValid​(String sComment)
        Validate the passed comment. Comments may not contain "--". See the XML specification 1.0 2ed section 2.5.
        Parameters:
        sComment - the XML comment
        Returns:
        true if the comment is valid, false otherwise

      • isNameValid

        public static boolean isNameValid​(String sName)
        Validate the passed name. Currently, this does not allow the "CombiningChar" or "Extender" characters that are allowed by the XML specification 1.0 2ed section 2.3 [4].
        Parameters:
        sName - the XML name to validate
        Returns:
        true if the name is valid, false otherwise

      • isWhitespace

        public static boolean isWhitespace​(char ch)
        Test if the specified character is XML whitespace.
        Parameters:
        ch - a character
        Returns:
        true if the passed character is XML whitespace

      • trim

        public static String trim​(String s)
        Trim XML whitespace. See XML 1.0 2ed section 2.3.
        Parameters:
        s - the original String
        Returns:
        the passed String minus any leading or trailing whitespace

      • trimf

        public static String trimf​(String s)
        Trim leading XML whitespace. See XML 1.0 2ed section 2.3.
        Parameters:
        s - the original String
        Returns:
        the passed String minus any leading whitespace

      • trimb

        public static String trimb​(String s)
        Trim trailing XML whitespace. See XML 1.0 2ed section 2.3.
        Parameters:
        s - the original String
        Returns:
        the passed String minus any trailing whitespace

      • encodeAttribute

        public static String encodeAttribute​(String sValue,
                                     char chQuote)
        Encode an attribute value so that it can be quoted and made part of a valid and well formed XML document.
        Parameters:
        sValue - the attribute value to encode
        chQuote - the character that will be used to quote the attribute
        Returns:
        the attribute value in its encoded form (but not quoted)

      • decodeAttribute

        public static String decodeAttribute​(String sValue)
        Decode an attribute value that was quoted.
        Parameters:
        sValue - the attribute value to decode
        Returns:
        the attribute value in its decoded form

      • encodeContent

        public static String encodeContent​(String sValue,
                                   boolean fPreferBlockEscape)
        Encode an element's content value so that it can be made part of a valid and well formed XML document.
        Parameters:
        sValue - the content value to encode
        fPreferBlockEscape - pass true to use the CDATA escape if two conditions are met: that escaping is required, and that the value does not contain the string "]]>"
        Returns:
        the attribute value in its encoded form (but not quoted)

      • decodeContent

        public static String decodeContent​(String sValue)
        Decode an element's content value.
        Parameters:
        sValue - the content value to decode
        Returns:
        the attribute value in its decoded form

      • encodeUri

        public static String encodeUri​(String sUri)
        Encode a System Identifier as per the XML 1.0 Specification second edition, section 4.2.2.
        Parameters:
        sUri - the URI to encode
        Returns:
        the encoded URI

      • decodeUri

        public static String decodeUri​(String sUri)
        Decode a System Identifier as per the XML 1.0 Specification 2nd ed section 4.2.2.
        Parameters:
        sUri - the URI to decode
        Returns:
        the decoded URI

      • quote

        public static String quote​(String s)
        XML quote the passed string.
        Parameters:
        s - the string to quote
        Returns:
        the quoted string

      • getAbsolutePath

        public static String getAbsolutePath​(XmlElement xml)
        Get the '/'-delimited path of the passed element starting from the root element.
        Parameters:
        xml - an XML element
        Returns:
        the path to the passed element in "absolute" format

      • isEmpty

        public static boolean isEmpty​(XmlElement xml)
        Check whether or not this element or any of its children elements have any content such as values or attributes.
        Parameters:
        xml - an XmlElement
        Returns:
        true iff the element itself and all of its children have neither values nor attributes

      • getElement

        public static XmlElement getElement​(XmlElement xml,
                                    String sName)
        Get a child element for the specified element. If multiple child elements exist that have the specified name, then the behavior of this method is undefined, and it is permitted to return any one of the matching elements, to return null, or to throw an arbitrary runtime exception.
        Parameters:
        xml - an XML element
        sName - the name of the desired child element
        Returns:
        the specified element as an object implementing XmlElement, or null if the specified child element does not exist

      • hasElement

        public static boolean hasElement​(XmlElement xml,
                                 String sName)
        Return true iff the specified element has a child element of the specified name.
        Parameters:
        xml - an XML element
        sName - the name of the child element to test for
        Returns:
        true iff the child element exists

      • findElement

        public static XmlElement findElement​(XmlElement xml,
                                     String sPath)
        Find a child element of the specified element with the specified '/'-delimited path.

        The path format is based on file-system paths (not XPath).

        • Leading '/' to specify root
        • Use of '/' as a path delimiter
        • Use of '..' to specify parent
        While the path expressions look like XPath, the semantics are not the same as XPath. eg: in findElement "/" means the root element, after which the root element does not need to be specified, however in XPath, the root element name still needs to be specified after the "/".

        If multiple child elements exist that have the specified name, then the behavior of this method is undefined, and it is permitted to return any one of the matching elements, to return null, or to throw an arbitrary runtime exception.

        Parameters:
        xml - an XML element
        sPath - the path to follow to find the desired XML element
        Returns:
        the child element with the specified path or null if such a child element does not exist

      • findElement

        public static XmlElement findElement​(XmlElement xml,
                                     String sPath,
                                     Object oValue)
        Find a child element of the specified element with the specified '/'-delimited path and specified value.

        The path format is based on file-system paths (not XPath).

        • Leading '/' to specify root
        • Use of '/' as a path delimiter
        • Use of '..' to specify parent
        While the path expressions look like XPath, the semantics are not the same as XPath. eg: in findElement "/" means the root element, after which the root element does not need to be specified, however in XPath, the root element name still needs to be specified after the "/".

        If multiple child elements exist that have the specified name and value, then this method returns any one of the matching elements

        Parameters:
        xml - an XML element
        sPath - the path to follow to find the desired XML element
        oValue - the value to match
        Returns:
        the child element with the specified path and value or null if the such a child element does not exist

      • ensureElement

        public static XmlElement ensureElement​(XmlElement xml,
                                       String sPath)
        Ensure that a child element exists. If any part of the path does not exist create new child elements to match the path.
        Parameters:
        xml - and XmlElement
        sPath - element path
        Returns:
        the existing or new XmlElement object
        Throws:
        IllegalArgumentException - if the name is null or if any part of the path is not a legal XML tag name
        UnsupportedOperationException - if any element in the path is immutable or otherwise can not add a child element
        See Also:
        findElement(XmlElement, String)

      • addElements

        public static void addElements​(XmlElement xml,
                               Iterator iter)
        Add the elements from the iterator to the passed XML.
        Parameters:
        xml - an XmlElement object to add to
        iter - an Iterator of zero or more XmlElement objects to add

      • removeElement

        public static int removeElement​(XmlElement xml,
                                String sName)
        Remove all immediate child elements with the given name
        Parameters:
        xml - an XmlElement
        sName - child element name
        Returns:
        the number of removed child elements
        Throws:
        UnsupportedOperationException - if the element is immutable or otherwise cannot remove a child element

      • removeEmptyElements

        public static XmlElement removeEmptyElements​(XmlElement xml)
        Remove all empty descendant elements.
        Parameters:
        xml - the parent XmlElement
        Returns:
        the input XmlElement
        Throws:
        UnsupportedOperationException - if the element is immutable or otherwise cannot remove a child element

      • replaceElement

        public static boolean replaceElement​(XmlElement xmlParent,
                                     XmlElement xmlReplace)
        Replace a child element with the same name as the specified element. If the child element does not exist the specified element is just added.
        Parameters:
        xmlParent - parent XmlElement
        xmlReplace - element to replace with
        Returns:
        true if matching child element has been found and replaced; false otherwise
        Throws:
        UnsupportedOperationException - if the parent element is immutable or otherwise cannot remove a child element

      • overrideElement

        public static void overrideElement​(XmlElement xmlBase,
                                   XmlElement xmlOverride)
        Override the values of the specified base element with values from the specified override element.

        The values are only overridden if there is an exact match between the element paths and all attribute values. Empty override values are ignored. Override elements that do not match any of the base elements are just copied over. No ambiguity is allowed.

        For example, if the base element has more then one child with the same name and attributes then the override is not allowed.

        Parameters:
        xmlBase - base XmlElement
        xmlOverride - override XmlElement
        Throws:
        UnsupportedOperationException - if the base element is immutable or there is ambiguity between the override and base elements

      • overrideElement

        public static void overrideElement​(XmlElement xmlBase,
                                   XmlElement xmlOverride,
                                   String sIdAttrName)
        Override the values of the specified base element with values from the specified override element.

        The values are only overridden if there is an exact match between the element paths and an attribute value for the specified attribute name. Empty override values are ignored. Override elements that do not match any of the base elements are just copied over. No ambiguity is allowed.

        For example, if the base element has more then one child with the same name and the specified attribute's value then the override is not allowed.

        As of Coherence 12.2.1, the only exception from the above rule is a scenario when a parent override element is a homogeneous sequence of identically named simple child elements with no attributes. In that case, all the corresponding child elements from the base are removed and replaced with the override content.

        Parameters:
        xmlBase - base XmlElement
        xmlOverride - override XmlElement
        sIdAttrName - attribute name that serves as an identifier allowing to match elements with the same name; if not specified all attributes have to match for an override
        Throws:
        UnsupportedOperationException - if the base element is immutable or there is ambiguity between the override and base elements

      • mergeSchema

        public static XmlElement mergeSchema​(XmlElement xmlTarget,
                                     XmlElement xmlSource)
        Merge the xmlns schema attributes and xsi:schemaLocation attribute of the target XmlElement into the source XmlElement.
        Parameters:
        xmlTarget - the XmlElement to merge the schema attributes into
        xmlSource - the XmlElement to merge the schema attributes from
        Returns:
        the xmlSource element

      • replaceSystemProperties

        public static void replaceSystemProperties​(XmlElement xml,
                                           String sPropertyAttribute)
        Replace the values of the XmlElement and all its children that contain the specified attribute with the values returned by the Config.getProperty() call.

        This method iterates the specified XmlElement tree and for each element that contains the attribute with the specified name replaces its value with the value of the corresponding system property (if exists).

        Parameters:
        xml - the XmlElement to process
        sPropertyAttribute - the name of the attribute that supplies the corresponding system property name

      • getSchemaLocations

        public static List<String> getSchemaLocations​(XmlElement xml,
                                              String sPrefix)
        Retrieve a listing of schema locations (schemaLocation/noNamespaceSchemaLocation) URL's referenced in XmlElement and all of its children.
        Parameters:
        xml - the XmlElement to process
        sPrefix - prefix of schema instances
        Returns:
        List of strings representing the schema location URL's

      • getNamespaceUri

        public static String getNamespaceUri​(XmlElement xml,
                                     String sPrefix)
        Retrieve the Namespace URI for a given prefix in a context of the specified XmlElement.
        Parameters:
        xml - the XmlElement
        sPrefix - the Namespace prefix
        Returns:
        the Namespace URI corresponding to the prefix

      • getNamespacePrefix

        public static String getNamespacePrefix​(XmlElement xml,
                                        String sUri)
        Retrieve the Namespace prefix for a given URI in a context of the specified XmlElement.
        Parameters:
        xml - the XmlElement
        sUri - the Namespace URI
        Returns:
        the Namespace prefix corresponding to the URI

      • ensureNamespace

        public static void ensureNamespace​(XmlElement xml,
                                   String sPrefix,
                                   String sUri)
        Ensure the existence of the Namespace declaration attribute in a context of the specified XmlElement.
        Parameters:
        xml - the XmlElement
        sPrefix - the Namespace prefix
        sUri - the Namespace URI

      • getUniversalName

        public static String getUniversalName​(String sLocal,
                                      String sPrefix)
        Return a universal XML element name.
        Parameters:
        sLocal - the local XML element name
        sPrefix - the Namespace prefix
        Returns:
        the universal XML element name.
        See Also:
        XML Namespaces

      • isNameMatch

        public static boolean isNameMatch​(XmlElement xml,
                                  String sName,
                                  String sLocal,
                                  String sUri)
        Check whether or not a universal (composite) name matches to the specified local name and Namespace URI.
        Parameters:
        xml - the (context) XmlElement
        sName - the universal name
        sLocal - the local xml name
        sUri - the Namespace URI
        Returns:
        true if the specified element matches to the specified local name and the specified Namespace URI.

      • isElementMatch

        public static boolean isElementMatch​(XmlElement xml,
                                     String sLocal,
                                     String sUri)
        Check whether or not an element matches to the specified local name and Namespace URI.
        Parameters:
        xml - the XmlElement
        sLocal - the local xml name
        sUri - the Namespace URI
        Returns:
        true if the specified element matches to the specified local name and the specified Namespace URI.

      • getElement

        public static XmlElement getElement​(XmlElement xml,
                                    String sLocal,
                                    String sUri)
        Get a child element of the specified XmlElement that matches to the specified local name and the specified Namespace URI.
        Parameters:
        xml - the parent XmlElement
        sLocal - the local xml name
        sUri - the Namespace URI
        Returns:
        an element that matches to the specified local name and the specified Namespace URI.

      • isSimpleSequence

        protected static boolean isSimpleSequence​(List<XmlElement> listXml)
        Check whether or not the specified list contains only simple elements with the same names.
        Parameters:
        listXml - the list of XmlElements
        Returns:
        true if the specified list contains only simple elements with the same name

      • getAttribute

        public static XmlValue getAttribute​(XmlElement xml,
                                    String sLocal,
                                    String sUri)
        Get an attribute of the specified XmlElement that matches to the specified local name and the specified Namespace URI.
        Parameters:
        xml - the XmlElement
        sLocal - the local attribute name
        sUri - the Namespace URI
        Returns:
        an XmlValue that matches to the specified local name and the specified Namespace URI.

      • getElements

        public static Iterator getElements​(XmlElement xml,
                                   String sLocal,
                                   String sUri)
        Get an iterator of child elements of the specified XmlElement that match to the specified local name and the specified Namespace URI.
        Parameters:
        xml - the parent XmlElement
        sLocal - the local xml name
        sUri - the Namespace URI
        Returns:
        an iterator containing all matching child elements.

      • purgeNamespace

        public static void purgeNamespace​(XmlElement xml)
        For the specified XmlElement purge the Namespace declarations that are declared somewhere up the xml tree.
        Parameters:
        xml - the XmlElement

      • purgeChildrenNamespace

        public static void purgeChildrenNamespace​(XmlElement xml)
        For the children elements of the specified XmlElement purge the repetitive Namespace declarations.
        Parameters:
        xml - the XmlElement

      • parseInitParams

        public static Object[] parseInitParams​(XmlElement xmlParams)
        Parse the specified "init-params" element of the following structure: 
         <!ELEMENT init-params (init-param*)>
 <!ELEMENT init-param ((param-name | param-type), param-value, description?)>
        into an object array.

        For the purpose of this method only the parameters that have the "param-type" element specified are processed. The following types are supported:

        • string (a.k.a. java.lang.String)
        • boolean (a.k.a. java.lang.Boolean)
        • int (a.k.a. java.lang.Integer)
        • long (a.k.a. java.lang.Long)
        • double (a.k.a. java.lang.Double)
        • decimal (a.k.a. java.math.BigDecimal)
        • file (a.k.a. java.io.File)
        • date (a.k.a. java.sql.Date)
        • time (a.k.a. java.sql.Time)
        • datetime (a.k.a. java.sql.Timestamp)
        • xml (a.k.a. com.tangosol.run.xml.XmlElement)
        For any other [explicitly specified] types the corresponding "init-param" XmlElement itself is placed into the returned array.
        Parameters:
        xmlParams - the "init-params" XmlElement to parse
        Returns:
        an array of parameters

      • parseTime

        public static long parseTime​(XmlElement xml,
                             String sName,
                             long cDefault)
        Parse the String value of the child XmlElement with the given name as a time in milliseconds. If the specified child XmlElement does not exist or is empty, the specified default value is returned.
        Parameters:
        xml - the parent XmlElement
        sName - the name of the child XmlElement
        cDefault - the default value
        Returns:
        the time (in milliseconds) represented by the specified child XmlElement

      • parseInitParams

        public static Object[] parseInitParams​(XmlElement xmlParams,
                                       XmlHelper.ParameterResolver resolver)
        Parse the specified "init-params" element of the following structure: 
         <!ELEMENT init-params (init-param*)>
 <!ELEMENT init-param ((param-name | param-type), param-value, description?)>
        into an object array.

        For the purpose of this method only the parameters that have the "param-type" element specified are processed. The following types are supported:

        • string (a.k.a. java.lang.String)
        • boolean (a.k.a. java.lang.Boolean)
        • int (a.k.a. java.lang.Integer)
        • long (a.k.a. java.lang.Long)
        • double (a.k.a. java.lang.Double)
        • decimal (a.k.a. java.math.BigDecimal)
        • file (a.k.a. java.io.File)
        • date (a.k.a. java.sql.Date)
        • time (a.k.a. java.sql.Time)
        • datetime (a.k.a. java.sql.Timestamp)
        • xml (a.k.a. com.tangosol.run.xml.XmlElement)
        For any other [explicitly specified] types the corresponding "init-param" XmlElement itself is placed into the returned array.
        Parameters:
        xmlParams - the "init-params" XmlElement to parse
        resolver - a ParameterResolver to resolve "{macro}" values (optional)
        Returns:
        an array of parameters

      • transformInitParams

        public static XmlElement transformInitParams​(XmlElement xmlParent,
                                             XmlElement xmlParams)
        Transform the specified "init-params" element of the following structure: 
         <!ELEMENT init-params (init-param*)>
 <!ELEMENT init-param ((param-name | param-type), param-value, description?)>
        into an XML element composed of the corresponding names. For example, the the "init-params" element of the following structure: 
           <init-param>
      <param-name>NameOne</param-name>
      <param-value>ValueOne</param-value>
   </init-param>
   <init-param>
      <param-name>NameTwo</param-name>
      <param-value>ValueTwo</param-value>
   </init-param>
        will transform into 
           <NameOne>ValueOne</NameOne>
   <NameTwo>ValueTwo</NameTwo>
        For the purpose of this method only the parameters that have the "param-name" element specified are processed.
        Parameters:
        xmlParent - the XML element to insert the transformed elements into
        xmlParams - the "init-params" XmlElement to parse
        Returns:
        the resulting XmlElement (xmlParent)

      • encodeInitParams

        public static XmlElement encodeInitParams​(XmlElement xmlParent,
                                          XmlElement xmlConfig)
        Encode the supplied xmlConfig XmlElement as a series of init-param elements. This operation is the inverse of transformInitParams.
        Parameters:
        xmlParent - the element in which to add the init-param elements
        xmlConfig - the element to encode from
        Returns:
        the resulting XmlElement (xmlParent)

      • parseParamTypes

        public static String[] parseParamTypes​(XmlElement xmlParams)
        Parse the specified "init-params" elements and return the array of the param types.
        Parameters:
        xmlParams - the "init-params" XmlElement to parse
        Returns:
        an array of parameter types

      • isInstanceConfigEmpty

        public static boolean isInstanceConfigEmpty​(XmlElement xmlClass)
        Check whether or not the specified configuration defines an instance of a class. The specified XmlElement should be of the same structure as used in the createInstance() method.
        Parameters:
        xmlClass - the XML element that contains the instantiation info
        Returns:
        true iff there is no class configuration information available

      • createInstance

        public static Object createInstance​(XmlElement xml,
                                    ClassLoader loader,
                                    XmlHelper.ParameterResolver resolver)
        Create an instance of the class configured using an XmlElement of the following structure: 
           <!ELEMENT ... (class-name | (class-factory-name, method-name), init-params?>
   <!ELEMENT init-params (init-param*)>
   <!ELEMENT init-param ((param-name | param-type), param-value, description?)>
        As of Coherence 3.6 the supplied element may specify all of the above elements within an <instance> element.
        Parameters:
        xml - the XML element that contains the instantiation info
        loader - a ClassLoader that should be used to load necessary classes (optional)
        resolver - a ParameterResolver to resolve "{macro}" values (optional)
        Returns:
        an object instantiated or obtained based on the class configuration

      • createInstance

        public static Object createInstance​(XmlElement xml,
                                    ClassLoader loader,
                                    XmlHelper.ParameterResolver resolver,
                                    Class clzAssignable)
        Create an instance of the class configured using an XmlElement of the following structure: 
           <!ELEMENT ... (class-name | (class-factory-name, method-name), init-params?>
   <!ELEMENT init-params (init-param*)>
   <!ELEMENT init-param ((param-name | param-type), param-value, description?)>
        As of Coherence 3.6 the supplied element may also be of the following format: 
         <!ELEMENT instance>
        where the "instance" format is the same as above.
        Parameters:
        xml - the XML element that contains the instantiation info
        loader - a ClassLoader that should be used to load necessary classes (optional)
        resolver - a ParameterResolver to resolve "{macro}" values (optional)
        clzAssignable - if non-null, this method will validate that the Class is assignable from the loaded Class
        Returns:
        an object instantiated or obtained based on the class configuration

      • hashElement

        public static int hashElement​(XmlElement xml)
        Provide a hash value for the XML element and all of its contained information. The hash value is defined as a xor of the following:
        • the hashCode from the element's value (i.e. super.hashCode())
        • the hashCode from each attribute name
        • the hashCode from each attribute value
        • the hashCode from each sub-element
        Parameters:
        xml - the XML element
        Returns:
        the hash value for the XML element

      • hashValue

        public static int hashValue​(XmlValue val)
        Provide a hash value for the XML value. The hash value is defined as one of the following:
        1. 0 if getValue() returns null
        2. otherwise the hash value is the hashCode() of the string representation of the value
        Parameters:
        val - the XML value
        Returns:
        the hash value for the XML value

      • equalsElement

        public static boolean equalsElement​(XmlElement xml1,
                                    XmlElement xml2)
        Compare one XML element with another XML element for equality.
        Parameters:
        xml1 - a non-null XmlElement object
        xml2 - a non-null XmlElement object
        Returns:
        true if the elements are equal, false otherwise

      • equalsValue

        public static boolean equalsValue​(XmlValue val1,
                                  XmlValue val2)
        Compare one XML value with another XML value for equality.
        Parameters:
        val1 - a non-null XmlValue object
        val2 - a non-null XmlValue object
        Returns:
        true if the values are equal, false otherwise

      • toString

        public static String toString​(XmlSerializable xml)
        Return the XML of an XmlSerializable object as a String.
        Parameters:
        xml - an object that can serialize itself into XML
        Returns:
        a String description of the object

      • convert

        public static Object convert​(Object o,
                             int nType)
        Convert the passed Object to the specified type.
        Parameters:
        o - the object value or null
        nType - the enumerated type to convert to
        Returns:
        an object of the specified type