com.bigdata.rdf.sparql.ast.DatasetNode Maven / Gradle / Ivy
package com.bigdata.rdf.sparql.ast;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import org.openrdf.query.Dataset;
import com.bigdata.bop.BOp;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.sparql.ast.eval.DataSetSummary;
import com.bigdata.rdf.spo.ISPO;
import com.bigdata.relation.accesspath.IElementFilter;
/**
* AST node models a SPARQL default graph and/or named graph data set.
*
* @author Mike Personick
* @version $Id$
*/
public class DatasetNode extends QueryNodeBase {
/**
*
*/
private static final long serialVersionUID = 1L;
interface Annotations extends QueryNodeBase.Annotations {
/**
* A {@link DataSetSummary} for the default graph.
*/
String DEFAULT_GRAPHS = "defaultGraphs";
/**
* An optional filter for the default graph.
*/
String DEFAULT_GRAPH_FILTER = "defaultGraphFilter";
/** A {@link DataSetSummary} for the named graphs. */
String NAMED_GRAPHS = "namedGraphs";
/**
* An optional filter for the named graphs.
*/
String NAMED_GRAPH_FILTER = "namedGraphFilter";
}
/**
* Constructor required for {@link com.bigdata.bop.BOpUtility#deepCopy(FilterNode)}.
*/
public DatasetNode(final DatasetNode op) {
super(op);
}
/**
* Required shallow copy constructor.
*/
public DatasetNode(final BOp[] args, final Map anns) {
super(args, anns);
}
/**
*
* @param ivs
* The {@link IV}s.
* @param update
* true iff this is a SPARQL UPDATE./
* @return
*/
@SuppressWarnings("rawtypes")
private static final DataSetSummary asDataSetSummary(final Set ivs,
final boolean update) {
/*
* Note: This will cause named-graphs-01b to fail.
*/
// if (ivs == null)
// return null;
/*
* Note: Per DAWG tests graph-02 and graph-04, a query against an empty
* default graph collection or an empty named graph collection should
* be constrained to NO graphs. This is different from the case where
* the dataset is simply not specified, which is interpreted as having
* no constraint on the visited graphs.
*
* See DataSetSummary#toInternalValues()
*/
// if (ivs.isEmpty())
// return null;
return new DataSetSummary((Set) (ivs == null ? Collections.emptySet()
: ivs), update);
}
/**
*
* @param defaultGraphs
* @param namedGraphs
* @param update
* true iff this is a SPARQL update.
*/
@SuppressWarnings("rawtypes")
public DatasetNode(final Set defaultGraphs, final Set namedGraphs,
final boolean update) {
this(asDataSetSummary(defaultGraphs, update), asDataSetSummary(
namedGraphs, update));
}
@SuppressWarnings("rawtypes")
public DatasetNode(final Set defaultGraphs, final Set namedGraphs,
final IElementFilter defaultGraphFilter,
final IElementFilter namedGraphFilter,
final boolean update) {
this(asDataSetSummary(defaultGraphs, update), asDataSetSummary(
namedGraphs, update), defaultGraphFilter, namedGraphFilter);
}
public DatasetNode(final DataSetSummary defaultGraphs,
final DataSetSummary namedGraphs) {
this(defaultGraphs, namedGraphs, null, null);
}
public DatasetNode(final Dataset dataset, final boolean update) {
this(DataSetSummary.toInternalValues(dataset.getDefaultGraphs()),
DataSetSummary.toInternalValues(dataset.getNamedGraphs()),
update);
}
/**
* Core constructor implementation.
*
* @param defaultGraphs
* The list of default graphs (optional). When not specified, all
* graphs will be used unless a defaultGraphsFilter is
* applied.
* @param namedGraphs
* The list of named graphs (optional). When not specified, all
* graphs will be used unless a namedGraphsFilter is
* applied.
* @param defaultGraphFilter
* A filter for default graphs (optional and typically only used
* when the defaultGraphs is null, e.g., to
* apply ACLs).
* @param namedGraphFilter
* A filter for named graphs (optional and typically only used
* when the namedGraphs is null, e.g., to
* apply ACLs).
*/
public DatasetNode(
final DataSetSummary defaultGraphs,
final DataSetSummary namedGraphs,
final IElementFilter defaultGraphFilter,
final IElementFilter namedGraphFilter) {
setDefaultGraphs(defaultGraphs);
setNamedGraphs(namedGraphs);
setDefaultGraphFilter(defaultGraphFilter);
setNamedGraphFilter(namedGraphFilter);
}
public void setDefaultGraphs(final DataSetSummary defaultGraphs) {
setProperty(Annotations.DEFAULT_GRAPHS, defaultGraphs);
}
public void setNamedGraphs(final DataSetSummary namedGraphs) {
setProperty(Annotations.NAMED_GRAPHS, namedGraphs);
}
public void setDefaultGraphFilter(
final IElementFilter defaultGraphFilter) {
setProperty(Annotations.DEFAULT_GRAPH_FILTER, defaultGraphFilter);
}
public void setNamedGraphFilter(final IElementFilter namedGraphFilter) {
setProperty(Annotations.NAMED_GRAPH_FILTER, namedGraphFilter);
}
public DataSetSummary getDefaultGraphs() {
return (DataSetSummary) getProperty(Annotations.DEFAULT_GRAPHS);
}
public DataSetSummary getNamedGraphs() {
return (DataSetSummary) getProperty(Annotations.NAMED_GRAPHS);
}
@SuppressWarnings("unchecked")
public IElementFilter getDefaultGraphFilter() {
return (IElementFilter) getProperty(Annotations.DEFAULT_GRAPH_FILTER);
}
@SuppressWarnings("unchecked")
public IElementFilter getNamedGraphFilter() {
return (IElementFilter) getProperty(Annotations.NAMED_GRAPH_FILTER);
}
@Override
public String toString(final int indent) {
final String s = indent(indent);
final StringBuilder sb = new StringBuilder();
final DataSetSummary defaultGraphs = getDefaultGraphs();
final DataSetSummary namedGraphs = getNamedGraphs();
final IElementFilter defaultGraphFilter = getDefaultGraphFilter();
final IElementFilter namedGraphFilter = getNamedGraphFilter();
if (defaultGraphs != null) {
sb.append("\n");
sb.append(s);
sb.append("defaultGraphs=");
sb.append(defaultGraphs.toString());
}
if (namedGraphs != null) {
sb.append("\n");
sb.append(s);
sb.append("namedGraphs=");
sb.append(namedGraphs.toString());
}
if (defaultGraphFilter != null) {
sb.append("\n");
sb.append(s);
sb.append("defaultGraphFilter=" + defaultGraphFilter);
}
if (namedGraphFilter != null) {
sb.append("\n");
sb.append(s);
sb.append("namedGraphFilter=" + namedGraphFilter);
}
// if (getQueryHints() != null) {
// sb.append("\n");
// sb.append(s);
// sb.append(Annotations.QUERY_HINTS);
// sb.append("=");
// sb.append(getQueryHints().toString());
// }
return sb.toString();
}
}
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