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Added support for the Metapath zero-or-one, one-or-more, and exactly-…
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83 changes: 83 additions & 0 deletions
83
...rc/main/java/gov/nist/secauto/metaschema/core/metapath/function/library/FnExactlyOne.java
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/* | ||
* SPDX-FileCopyrightText: none | ||
* SPDX-License-Identifier: CC0-1.0 | ||
*/ | ||
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package gov.nist.secauto.metaschema.core.metapath.function.library; | ||
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import gov.nist.secauto.metaschema.core.metapath.DynamicContext; | ||
import gov.nist.secauto.metaschema.core.metapath.MetapathConstants; | ||
import gov.nist.secauto.metaschema.core.metapath.function.IArgument; | ||
import gov.nist.secauto.metaschema.core.metapath.function.IFunction; | ||
import gov.nist.secauto.metaschema.core.metapath.function.InvalidArgumentFunctionException; | ||
import gov.nist.secauto.metaschema.core.metapath.item.IItem; | ||
import gov.nist.secauto.metaschema.core.metapath.item.ISequence; | ||
import gov.nist.secauto.metaschema.core.util.ObjectUtils; | ||
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import java.util.List; | ||
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import edu.umd.cs.findbugs.annotations.NonNull; | ||
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/** | ||
* Implements the XPath 3.1 <a href= | ||
* "https://www.w3.org/TR/xpath-functions-31/#func-exactly-one">fn:exactly-one</a> | ||
* function. | ||
*/ | ||
public final class FnExactlyOne { | ||
private static final String NAME = "exactly-one"; | ||
@NonNull | ||
static final IFunction SIGNATURE = IFunction.builder() | ||
.name(NAME) | ||
.namespace(MetapathConstants.NS_METAPATH_FUNCTIONS) | ||
.deterministic() | ||
.contextIndependent() | ||
.focusIndependent() | ||
.argument(IArgument.builder() | ||
.name("arg") | ||
.type(IItem.type()) | ||
.zeroOrMore() | ||
.build()) | ||
.returnType(IItem.type()) | ||
.returnOne() | ||
.functionHandler(FnExactlyOne::execute) | ||
.build(); | ||
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private FnExactlyOne() { | ||
// disable construction | ||
} | ||
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@SuppressWarnings("unused") | ||
@NonNull | ||
private static ISequence<?> execute(@NonNull IFunction function, | ||
@NonNull List<ISequence<?>> arguments, | ||
@NonNull DynamicContext dynamicContext, | ||
IItem focus) { | ||
return fnExactlyOne(ObjectUtils.requireNonNull(arguments.get(0))); | ||
} | ||
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/** | ||
* Check that the provided sequence has exactly one item. | ||
* <p> | ||
* Based on the XPath 3.1 <a href= | ||
* "https://www.w3.org/TR/xpath-functions-31/#func-exactly-one">fn:exactly-one</a> | ||
* function. | ||
* | ||
* @param sequence | ||
* the sequence to evaluate | ||
* @return the sequence if it has zero or one items | ||
* @throws InvalidArgumentFunctionException | ||
* with the code | ||
* {@link InvalidArgumentFunctionException#INVALID_ARGUMENT_EXACTLY_ONE} | ||
* if the sequence contains less or more than one item | ||
*/ | ||
@NonNull | ||
public static ISequence<?> fnExactlyOne(@NonNull ISequence<?> sequence) { | ||
if (sequence.size() != 1) { | ||
throw new InvalidArgumentFunctionException( | ||
InvalidArgumentFunctionException.INVALID_ARGUMENT_EXACTLY_ONE, | ||
String.format("fn:exactly-one called with the sequence '%s' containing a number of items other than one.", | ||
sequence.toSignature())); | ||
} | ||
return sequence; | ||
} | ||
} |
83 changes: 83 additions & 0 deletions
83
...src/main/java/gov/nist/secauto/metaschema/core/metapath/function/library/FnOneOrMore.java
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,83 @@ | ||
/* | ||
* SPDX-FileCopyrightText: none | ||
* SPDX-License-Identifier: CC0-1.0 | ||
*/ | ||
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package gov.nist.secauto.metaschema.core.metapath.function.library; | ||
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import gov.nist.secauto.metaschema.core.metapath.DynamicContext; | ||
import gov.nist.secauto.metaschema.core.metapath.MetapathConstants; | ||
import gov.nist.secauto.metaschema.core.metapath.function.IArgument; | ||
import gov.nist.secauto.metaschema.core.metapath.function.IFunction; | ||
import gov.nist.secauto.metaschema.core.metapath.function.InvalidArgumentFunctionException; | ||
import gov.nist.secauto.metaschema.core.metapath.item.IItem; | ||
import gov.nist.secauto.metaschema.core.metapath.item.ISequence; | ||
import gov.nist.secauto.metaschema.core.util.ObjectUtils; | ||
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import java.util.List; | ||
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import edu.umd.cs.findbugs.annotations.NonNull; | ||
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/** | ||
* Implements the XPath 3.1 <a href= | ||
* "https://www.w3.org/TR/xpath-functions-31/#func-one-or-more">fn:one-or-more</a> | ||
* function. | ||
*/ | ||
public final class FnOneOrMore { | ||
private static final String NAME = "one-or-more"; | ||
@NonNull | ||
static final IFunction SIGNATURE = IFunction.builder() | ||
.name(NAME) | ||
.namespace(MetapathConstants.NS_METAPATH_FUNCTIONS) | ||
.deterministic() | ||
.contextIndependent() | ||
.focusIndependent() | ||
.argument(IArgument.builder() | ||
.name("arg") | ||
.type(IItem.type()) | ||
.zeroOrMore() | ||
.build()) | ||
.returnType(IItem.type()) | ||
.returnOneOrMore() | ||
.functionHandler(FnOneOrMore::execute) | ||
.build(); | ||
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private FnOneOrMore() { | ||
// disable construction | ||
} | ||
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@SuppressWarnings("unused") | ||
@NonNull | ||
private static ISequence<?> execute(@NonNull IFunction function, | ||
@NonNull List<ISequence<?>> arguments, | ||
@NonNull DynamicContext dynamicContext, | ||
IItem focus) { | ||
return fnOneOrMore(ObjectUtils.requireNonNull(arguments.get(0))); | ||
} | ||
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/** | ||
* Check that the provided sequence has one or more items. | ||
* <p> | ||
* Based on the XPath 3.1 <a href= | ||
* "https://www.w3.org/TR/xpath-functions-31/#func-one-or-more">fn:one-or-more</a> | ||
* function. | ||
* | ||
* @param sequence | ||
* the sequence to evaluate | ||
* @return the sequence if it has zero or one items | ||
* @throws InvalidArgumentFunctionException | ||
* with the code | ||
* {@link InvalidArgumentFunctionException#INVALID_ARGUMENT_ONE_OR_MORE} | ||
* if the sequence contains no items | ||
*/ | ||
@NonNull | ||
public static ISequence<?> fnOneOrMore(@NonNull ISequence<?> sequence) { | ||
if (sequence.size() < 1) { | ||
throw new InvalidArgumentFunctionException( | ||
InvalidArgumentFunctionException.INVALID_ARGUMENT_ONE_OR_MORE, | ||
String.format("fn:one-or-more called with the sequence '%s' containing less than one item.", | ||
sequence.toSignature())); | ||
} | ||
return sequence; | ||
} | ||
} |
83 changes: 83 additions & 0 deletions
83
...src/main/java/gov/nist/secauto/metaschema/core/metapath/function/library/FnZeroOrOne.java
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,83 @@ | ||
/* | ||
* SPDX-FileCopyrightText: none | ||
* SPDX-License-Identifier: CC0-1.0 | ||
*/ | ||
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package gov.nist.secauto.metaschema.core.metapath.function.library; | ||
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import gov.nist.secauto.metaschema.core.metapath.DynamicContext; | ||
import gov.nist.secauto.metaschema.core.metapath.MetapathConstants; | ||
import gov.nist.secauto.metaschema.core.metapath.function.IArgument; | ||
import gov.nist.secauto.metaschema.core.metapath.function.IFunction; | ||
import gov.nist.secauto.metaschema.core.metapath.function.InvalidArgumentFunctionException; | ||
import gov.nist.secauto.metaschema.core.metapath.item.IItem; | ||
import gov.nist.secauto.metaschema.core.metapath.item.ISequence; | ||
import gov.nist.secauto.metaschema.core.util.ObjectUtils; | ||
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import java.util.List; | ||
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import edu.umd.cs.findbugs.annotations.NonNull; | ||
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/** | ||
* Implements the XPath 3.1 <a href= | ||
* "https://www.w3.org/TR/xpath-functions-31/#func-zero-or-one">fn:zero-or-one</a> | ||
* function. | ||
*/ | ||
public final class FnZeroOrOne { | ||
private static final String NAME = "zero-or-one"; | ||
@NonNull | ||
static final IFunction SIGNATURE = IFunction.builder() | ||
.name(NAME) | ||
.namespace(MetapathConstants.NS_METAPATH_FUNCTIONS) | ||
.deterministic() | ||
.contextIndependent() | ||
.focusIndependent() | ||
.argument(IArgument.builder() | ||
.name("arg") | ||
.type(IItem.type()) | ||
.zeroOrMore() | ||
.build()) | ||
.returnType(IItem.type()) | ||
.returnZeroOrOne() | ||
.functionHandler(FnZeroOrOne::execute) | ||
.build(); | ||
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private FnZeroOrOne() { | ||
// disable construction | ||
} | ||
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@SuppressWarnings("unused") | ||
@NonNull | ||
private static ISequence<?> execute(@NonNull IFunction function, | ||
@NonNull List<ISequence<?>> arguments, | ||
@NonNull DynamicContext dynamicContext, | ||
IItem focus) { | ||
return fnZeroOrOne(ObjectUtils.requireNonNull(arguments.get(0))); | ||
} | ||
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/** | ||
* Check that the provided sequence has zero or one items. | ||
* <p> | ||
* Based on the XPath 3.1 <a href= | ||
* "https://www.w3.org/TR/xpath-functions-31/#func-zero-or-one">fn:zero-or-one</a> | ||
* function. | ||
* | ||
* @param sequence | ||
* the sequence to evaluate | ||
* @return the sequence if it has zero or one items | ||
* @throws InvalidArgumentFunctionException | ||
* with the code | ||
* {@link InvalidArgumentFunctionException#INVALID_ARGUMENT_ZERO_OR_ONE} | ||
* if the sequence contains more than one item | ||
*/ | ||
@NonNull | ||
public static ISequence<?> fnZeroOrOne(@NonNull ISequence<?> sequence) { | ||
if (sequence.size() > 1) { | ||
throw new InvalidArgumentFunctionException( | ||
InvalidArgumentFunctionException.INVALID_ARGUMENT_ZERO_OR_ONE, | ||
String.format("fn:zero-or-one called with the sequence '%s' containing more than one item.", | ||
sequence.toSignature())); | ||
} | ||
return sequence; | ||
} | ||
} |
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