javax.xml.xquery.XQStaticContext java code examples

Common ways to obtain XQStaticContext

private void myMethod () {
 XQStaticContext x =XQConnection xQConnection;xQConnection.getStaticContext()
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}

String prop = props.getProperty(pn_xqj_baseURI);
if (prop != null) {
  ctx.setBaseURI(prop);
  ctx.setBindingMode(Integer.valueOf(prop));
  ctx.setBoundarySpacePolicy(Integer.valueOf(prop));
  ctx.setConstructionMode(Integer.valueOf(prop));
  ctx.setCopyNamespacesModeInherit(Integer.valueOf(prop));
  ctx.setCopyNamespacesModePreserve(Integer.valueOf(prop));
  ctx.setDefaultCollation(prop);
  ctx.setDefaultElementTypeNamespace(prop);
  ctx.setDefaultFunctionNamespace(prop);
  for (String ns: nspaces) {
    int pos = ns.indexOf(":");
    ctx.declareNamespace(ns.substring(0, pos), ns.substring(pos + 1));
  ctx.setDefaultOrderForEmptySequences(Integer.valueOf(prop));
  ctx.setHoldability(Integer.valueOf(prop));
  ctx.setOrderingMode(Integer.valueOf(prop));

public void copyFrom(XQStaticContext from) throws XQException {
  this.prefixes = null;
  this.namespaces.clear();
  for (String prefix: from.getNamespacePrefixes()) {
    this.declareNamespace(prefix, from.getNamespaceURI(prefix));
  }
  this.defaultElementTypeNamespace = from.getDefaultElementTypeNamespace();
  this.defaultFunctionNamespace = from.getDefaultFunctionNamespace();
  this.defaultCollationUri = from.getDefaultCollation();
  this.constructionMode = from.getConstructionMode();
  this.orderingMode = from.getOrderingMode();
  this.defaultOrderForEmptySequences = from.getDefaultOrderForEmptySequences();
  this.boundarySpacePolicy = from.getBoundarySpacePolicy();
  this.copyNamespacesModePreserve = from.getCopyNamespacesModePreserve();
  this.copyNamespacesModeInherit = from.getCopyNamespacesModeInherit();
  this.baseUri = from.getBaseURI();
  this.bindingMode = from.getBindingMode();
  this.holdability = from.getHoldability();
  this.queryLanguageTypeAndVersion = from.getQueryLanguageTypeAndVersion();
  this.scrollability = from.getScrollability();
  this.queryTimeout = from.getQueryTimeout();
  setContextItemStaticType(from.getContextItemStaticType());
}

protected void setStaticContext(StaticQueryContext sqc, XQStaticContext ctx) throws XQException {
  sqc.setBaseURI(ctx.getBaseURI());
  sqc.setPreserveBoundarySpace(ctx.getBoundarySpacePolicy() == BOUNDARY_SPACE_PRESERVE);
  if (ctx.getConstructionMode() == CONSTRUCTION_MODE_PRESERVE) {
    sqc.setConstructionMode(Validation.PRESERVE);
  } else {
  sqc.setInheritNamespaces(ctx.getCopyNamespacesModeInherit() == COPY_NAMESPACES_MODE_INHERIT);
  sqc.setPreserveNamespaces(ctx.getCopyNamespacesModePreserve() == COPY_NAMESPACES_MODE_PRESERVE);
  sqc.declareDefaultCollation(ctx.getDefaultCollation());
  sqc.setDefaultElementNamespace(ctx.getDefaultElementTypeNamespace());
  sqc.setDefaultFunctionNamespace(ctx.getDefaultFunctionNamespace());
  sqc.setEmptyLeast(ctx.getDefaultOrderForEmptySequences() == DEFAULT_ORDER_FOR_EMPTY_SEQUENCES_LEAST);
  sqc.clearNamespaces();
  String[] prefixes = ctx.getNamespacePrefixes();
  for (String prefix: prefixes) {
    sqc.declareNamespace(prefix, ctx.getNamespaceURI(prefix));
  if (ctx.getQueryLanguageTypeAndVersion() == LANGTYPE_XQUERY) {
    sqc.setLanguageVersion(saxon_xquery_version);

staticContext.declareNamespace(prefix, uri);
if ("".equals(prefix)) {
  declarations.declareDefaultElementNamespace(uri);

for (String prefix : prefixes) {
  String uri = nsContext.getNamespaceURI(prefix);
  staticEnv.declareNamespace(prefix, uri);

result.put(pn_xqj_baseURI, ctx.getBaseURI());
result.setProperty(pn_xqj_bindingMode, String.valueOf(ctx.getBindingMode()));
result.setProperty(pn_xqj_boundarySpacePolicy, String.valueOf(ctx.getBoundarySpacePolicy()));
result.setProperty(pn_xqj_constructionMode, String.valueOf(ctx.getConstructionMode()));
result.setProperty(pn_xqj_copyNamespacesModeInherit, String.valueOf(ctx.getCopyNamespacesModeInherit()));
result.setProperty(pn_xqj_copyNamespacesModePreserve, String.valueOf(ctx.getCopyNamespacesModePreserve()));
result.setProperty(pn_xqj_defaultCollationUri, ctx.getDefaultCollation());
result.setProperty(pn_xqj_defaultElementTypeNamespace, ctx.getDefaultElementTypeNamespace());
result.setProperty(pn_xqj_defaultFunctionNamespace, ctx.getDefaultFunctionNamespace());
if (ctx.getNamespacePrefixes().length > 0) {
  StringBuilder namespaces = new StringBuilder();
  for (String prefix: ctx.getNamespacePrefixes()) {
    namespaces.append(prefix).append(":").append(ctx.getNamespaceURI(prefix));
    namespaces.append(" ");
result.setProperty(pn_xqj_defaultOrderForEmptySequences, String.valueOf(ctx.getDefaultOrderForEmptySequences()));
result.setProperty(pn_xqj_holdability, String.valueOf(ctx.getHoldability()));
result.setProperty(pn_xqj_orderingMode, String.valueOf(ctx.getOrderingMode()));
result.setProperty(pn_xqj_queryLanguageTypeAndVersion, String.valueOf(ctx.getQueryLanguageTypeAndVersion()));
result.setProperty(pn_xqj_queryTimeout, String.valueOf(ctx.getQueryTimeout()));
result.setProperty(pn_xqj_scrollability, String.valueOf(ctx.getScrollability()));
return result;

Javadoc

An XQStaticContext represents default values for various XQuery Static Context Components. Further it includes the static XQJ properties for an XQExpression or XQPreparedExpression object.

The following XQuery Static Context Components are supported through the XQStaticContext interface:

Statically known namespaces
Default element/type namespace
Default function namespace
Context item static type
Default collation
Construction mode
Ordering mode
Default order for empty sequences
Boundary-space policy
Copy-namespaces mode
Base URI

As described in the XQuery specification, each of these default values can be overridden or augmented in the query prolog.

In addition XQStaticContext includes the static XQJ properties for an XQExpression or XQPreparedExpression object:

Binding mode
Holdability of the result sequences
Scrollability of the result sequences
Query language
Query timeout

Note that XQStaticContext is a value object, changing attributes in such object doesn't affect any existing XQExpression or XQPreparedExpression object.
In order to take effect, the application needs to explicitly change the XQConnection default values, or specify an XQStaticContext object when creating an XQExpression or XQPreparedExpression.

 
XQConnection conn = XQDatasource.getConnection(); 
// get the default values from the implementation 
XQStaticContext cntxt = conn.getStaticContext(); 
// change the base uri 
cntxt.setBaseURI("http://www.foo.com/xml/"); 
// change the implementation defaults 
conn.setStaticContext(cntxt); 
// create an XQExpression using the new defaults 
XQExpression expr1 = conn.createExpression(); 
// creat an XQExpression, using BaseURI "file:///root/user/john/" 
cntxt.setBaseURI("file:///root/user/john/"); 
XQExpression expr2 = conn.createExpression(cntxt); 
...

Most used methods

declareNamespace
Declares a namespace prefix and associates it with a namespace URI. If the namespace URI is the empt
getBaseURI
Gets the Base URI, if set in the static context, else the empty string.
getBoundarySpacePolicy
Gets the boundary-space policy defined in the static context.
getConstructionMode
Gets the construction mode defined in the static context.
getCopyNamespacesModeInherit
Gets the inherit part of the copy-namespaces mode defined in the static context.
getCopyNamespacesModePreserve
Gets the preserve part of the copy-namespaces mode defined in the static context.
getDefaultCollation
Gets the URI of the default collation.
getDefaultElementTypeNamespace
Gets the URI of the default element/type namespace, the empty string if not set.
getDefaultFunctionNamespace
Gets the URI of the default function namespace, the empty string if not set.
getDefaultOrderForEmptySequences
Gets the default order for empty sequences defined in the static context.
getNamespacePrefixes
Returns the prefixes of all the statically known namespaces. Use the getNamespaceURI method to look
getNamespaceURI
Retrieves the namespace URI associated with a prefix. An XQException is thrown if an unknown prefix

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How to useXQStaticContext in javax.xml.xquery

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