I ran into an error that states “XPath failed due to: A sequence of more than one item is not allowed as the first argument of contains()(‘string1’, ‘string2’)” when I’m trying to use contain to find one string inside a sequence.
My code is related to resolving my other question
https://stackoverflow.com/questions/9006479/with-pmd-and-xpath-can-i-determine-if-two-node-sets-have-any-node-in-common
Expression/PrimaryExpression/PrimaryPrefix
[
contains(ancestor::ClassOrInterfaceBody/ClassOrInterfaceBodyDeclaration/FieldDeclaration/VariableDeclarator/VariableDeclaratorId/@Image,./Name/@Image)
]
I ran into this issue because VariableDeclaratorId/@Image returns two string when there are multiple fields to parse. I haven’t found solution to resolve this. I thought about using predicates, but this contains is inside of a predicate already, doing VariableDeclaratorId/@Image[./Name/@Image] wouldn’t work because this [./Name/@Image] is different from PrimaryPrefix/Name/@Image.
Expected Output:
<Expression BeginColumn="26" BeginLine="6" EndColumn="30" EndLine="6" Image="" Label="">
<PrimaryExpression BeginColumn="26" BeginLine="6" EndColumn="30" EndLine="6" Image="" Label="">
<PrimaryPrefix BeginColumn="26" BeginLine="6" EndColumn="30" EndLine="6" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="26" BeginLine="6" EndColumn="30" EndLine="6" Image="m_foo" Label=""/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
<Expression BeginColumn="26" BeginLine="7" EndColumn="30" EndLine="7" Image="" Label="">
<PrimaryExpression BeginColumn="26" BeginLine="7" EndColumn="30" EndLine="7" Image="" Label="">
<PrimaryPrefix BeginColumn="26" BeginLine="7" EndColumn="30" EndLine="7" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="26" BeginLine="7" EndColumn="30" EndLine="7" Image="m_two" Label=""/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
Jave Source:
public class domainFunction {
private int m_foo; // OK
public void bar() {
calculate (random);
System.out.println(m_foo);
System.out.println(m_two);
}
}
RAW XML:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<CompilationUnit BeginColumn="1" BeginLine="1" EndColumn="3" EndLine="13" Image="" Label="" declarationsAreInDefaultPackage="true">
<TypeDeclaration BeginColumn="1" BeginLine="1" EndColumn="3" EndLine="13" Image="" Label="">
<ClassOrInterfaceDeclaration Abstract="false" BeginColumn="8" BeginLine="1" EndColumn="3" EndLine="13" Final="false" Image="domainFunction" Interface="false" Label="" Modifiers="1" Native="false" Nested="false" PackagePrivate="false" Private="false" Protected="false" Public="true" Static="false" Strictfp="false" Synchronized="false" Transient="false" Volatile="false">
<ClassOrInterfaceBody BeginColumn="29" BeginLine="1" EndColumn="3" EndLine="13" Image="" Label="">
<ClassOrInterfaceBodyDeclaration AnonymousInnerClass="false" BeginColumn="5" BeginLine="2" EndColumn="22" EndLine="2" EnumChild="false" Image="" Label="">
<FieldDeclaration Abstract="false" Array="false" ArrayDepth="0" BeginColumn="13" BeginLine="2" EndColumn="22" EndLine="2" Final="false" Image="" InterfaceMember="false" Label="" Modifiers="4" Native="false" PackagePrivate="false" Private="true" Protected="false" Public="false" Static="false" Strictfp="false" Synchronized="false" SyntacticallyFinal="false" SyntacticallyPublic="false" SyntacticallyStatic="false" Transient="false" VariableName="m_foo" Volatile="false">
<Type Array="false" ArrayDepth="0" BeginColumn="13" BeginLine="2" EndColumn="15" EndLine="2" Image="" Label="" TypeImage="int">
<PrimitiveType Array="false" ArrayDepth="0" BeginColumn="13" BeginLine="2" Boolean="false" EndColumn="15" EndLine="2" Image="int" Label=""/>
</Type>
<VariableDeclarator BeginColumn="17" BeginLine="2" EndColumn="21" EndLine="2" Image="" Label="">
<VariableDeclaratorId Array="false" ArrayDepth="0" BeginColumn="17" BeginLine="2" EndColumn="21" EndLine="2" ExceptionBlockParameter="false" Image="m_foo" Label=""/>
</VariableDeclarator>
</FieldDeclaration>
</ClassOrInterfaceBodyDeclaration>
<ClassOrInterfaceBodyDeclaration AnonymousInnerClass="false" BeginColumn="5" BeginLine="3" EndColumn="22" EndLine="3" EnumChild="false" Image="" Label="">
<FieldDeclaration Abstract="false" Array="false" ArrayDepth="0" BeginColumn="13" BeginLine="3" EndColumn="22" EndLine="3" Final="false" Image="" InterfaceMember="false" Label="" Modifiers="4" Native="false" PackagePrivate="false" Private="true" Protected="false" Public="false" Static="false" Strictfp="false" Synchronized="false" SyntacticallyFinal="false" SyntacticallyPublic="false" SyntacticallyStatic="false" Transient="false" VariableName="m_two" Volatile="false">
<Type Array="false" ArrayDepth="0" BeginColumn="13" BeginLine="3" EndColumn="15" EndLine="3" Image="" Label="" TypeImage="int">
<PrimitiveType Array="false" ArrayDepth="0" BeginColumn="13" BeginLine="3" Boolean="false" EndColumn="15" EndLine="3" Image="int" Label=""/>
</Type>
<VariableDeclarator BeginColumn="17" BeginLine="3" EndColumn="21" EndLine="3" Image="" Label="">
<VariableDeclaratorId Array="false" ArrayDepth="0" BeginColumn="17" BeginLine="3" EndColumn="21" EndLine="3" ExceptionBlockParameter="false" Image="m_two" Label=""/>
</VariableDeclarator>
</FieldDeclaration>
</ClassOrInterfaceBodyDeclaration>
<ClassOrInterfaceBodyDeclaration AnonymousInnerClass="false" BeginColumn="5" BeginLine="4" EndColumn="5" EndLine="11" EnumChild="false" Image="" Label="">
<MethodDeclaration Abstract="false" BeginColumn="12" BeginLine="4" EndColumn="5" EndLine="11" Final="false" Image="" InterfaceMember="false" Label="" MethodName="bar" Modifiers="1" Native="false" PackagePrivate="false" Private="false" Protected="false" Public="true" Static="false" Strictfp="false" Synchronized="false" SyntacticallyAbstract="false" SyntacticallyPublic="true" Transient="false" Void="true" Volatile="false">
<ResultType BeginColumn="12" BeginLine="4" EndColumn="15" EndLine="4" Image="" Label="" Void="true" returnsArray="false"/>
<MethodDeclarator BeginColumn="17" BeginLine="4" EndColumn="21" EndLine="4" Image="bar" Label="" ParameterCount="0">
<FormalParameters BeginColumn="20" BeginLine="4" EndColumn="21" EndLine="4" Image="" Label="" ParameterCount="0"/>
</MethodDeclarator>
<Block BeginColumn="23" BeginLine="4" EndColumn="5" EndLine="11" Image="" Label="" containsComment="false">
<BlockStatement Allocation="false" BeginColumn="7" BeginLine="5" EndColumn="22" EndLine="5" Image="" Label="">
<LocalVariableDeclaration Abstract="false" Array="false" ArrayDepth="0" BeginColumn="7" BeginLine="5" EndColumn="21" EndLine="5" Final="false" Image="" Label="" Modifiers="0" Native="false" PackagePrivate="true" Private="false" Protected="false" Public="false" Static="false" Strictfp="false" Synchronized="false" Transient="false" VariableName="random" Volatile="false">
<Type Array="false" ArrayDepth="0" BeginColumn="7" BeginLine="5" EndColumn="9" EndLine="5" Image="" Label="" TypeImage="int">
<PrimitiveType Array="false" ArrayDepth="0" BeginColumn="7" BeginLine="5" Boolean="false" EndColumn="9" EndLine="5" Image="int" Label=""/>
</Type>
<VariableDeclarator BeginColumn="11" BeginLine="5" EndColumn="21" EndLine="5" Image="" Label="">
<VariableDeclaratorId Array="false" ArrayDepth="0" BeginColumn="11" BeginLine="5" EndColumn="16" EndLine="5" ExceptionBlockParameter="false" Image="random" Label=""/>
<VariableInitializer BeginColumn="20" BeginLine="5" EndColumn="21" EndLine="5" Image="" Label="">
<Expression BeginColumn="20" BeginLine="5" EndColumn="21" EndLine="5" Image="" Label="">
<PrimaryExpression BeginColumn="20" BeginLine="5" EndColumn="21" EndLine="5" Image="" Label="">
<PrimaryPrefix BeginColumn="20" BeginLine="5" EndColumn="21" EndLine="5" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Literal BeginColumn="20" BeginLine="5" CharLiteral="false" EndColumn="21" EndLine="5" FloatLiteral="false" Image="12" IntLiteral="true" Label="" SingleCharacterStringLiteral="false" StringLiteral="false"/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
</VariableInitializer>
</VariableDeclarator>
</LocalVariableDeclaration>
</BlockStatement>
<BlockStatement Allocation="false" BeginColumn="7" BeginLine="6" EndColumn="25" EndLine="6" Image="" Label="">
<Statement BeginColumn="7" BeginLine="6" EndColumn="25" EndLine="6" Image="" Label="">
<StatementExpression BeginColumn="7" BeginLine="6" EndColumn="24" EndLine="6" Image="" Label="">
<PrimaryExpression BeginColumn="7" BeginLine="6" EndColumn="24" EndLine="6" Image="" Label="">
<PrimaryPrefix BeginColumn="7" BeginLine="6" EndColumn="15" EndLine="6" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="7" BeginLine="6" EndColumn="15" EndLine="6" Image="calculate" Label=""/>
</PrimaryPrefix>
<PrimarySuffix ArgumentCount="1" Arguments="true" ArrayDereference="false" BeginColumn="17" BeginLine="6" EndColumn="24" EndLine="6" Image="" Label="">
<Arguments ArgumentCount="1" BeginColumn="17" BeginLine="6" EndColumn="24" EndLine="6" Image="" Label="">
<ArgumentList BeginColumn="18" BeginLine="6" EndColumn="23" EndLine="6" Image="" Label="">
<Expression BeginColumn="18" BeginLine="6" EndColumn="23" EndLine="6" Image="" Label="">
<PrimaryExpression BeginColumn="18" BeginLine="6" EndColumn="23" EndLine="6" Image="" Label="">
<PrimaryPrefix BeginColumn="18" BeginLine="6" EndColumn="23" EndLine="6" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="18" BeginLine="6" EndColumn="23" EndLine="6" Image="random" Label=""/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
</ArgumentList>
</Arguments>
</PrimarySuffix>
</PrimaryExpression>
</StatementExpression>
</Statement>
</BlockStatement>
<BlockStatement Allocation="false" BeginColumn="7" BeginLine="7" EndColumn="24" EndLine="7" Image="" Label="">
<Statement BeginColumn="7" BeginLine="7" EndColumn="24" EndLine="7" Image="" Label="">
<StatementExpression BeginColumn="7" BeginLine="7" EndColumn="23" EndLine="7" Image="" Label="">
<PrimaryExpression BeginColumn="7" BeginLine="7" EndColumn="23" EndLine="7" Image="" Label="">
<PrimaryPrefix BeginColumn="7" BeginLine="7" EndColumn="15" EndLine="7" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="7" BeginLine="7" EndColumn="15" EndLine="7" Image="calculate" Label=""/>
</PrimaryPrefix>
<PrimarySuffix ArgumentCount="1" Arguments="true" ArrayDereference="false" BeginColumn="17" BeginLine="7" EndColumn="23" EndLine="7" Image="" Label="">
<Arguments ArgumentCount="1" BeginColumn="17" BeginLine="7" EndColumn="23" EndLine="7" Image="" Label="">
<ArgumentList BeginColumn="18" BeginLine="7" EndColumn="22" EndLine="7" Image="" Label="">
<Expression BeginColumn="18" BeginLine="7" EndColumn="22" EndLine="7" Image="" Label="">
<PrimaryExpression BeginColumn="18" BeginLine="7" EndColumn="22" EndLine="7" Image="" Label="">
<PrimaryPrefix BeginColumn="18" BeginLine="7" EndColumn="22" EndLine="7" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="18" BeginLine="7" EndColumn="22" EndLine="7" Image="m_foo" Label=""/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
</ArgumentList>
</Arguments>
</PrimarySuffix>
</PrimaryExpression>
</StatementExpression>
</Statement>
</BlockStatement>
<BlockStatement Allocation="false" BeginColumn="7" BeginLine="8" EndColumn="32" EndLine="8" Image="" Label="">
<Statement BeginColumn="7" BeginLine="8" EndColumn="32" EndLine="8" Image="" Label="">
<StatementExpression BeginColumn="7" BeginLine="8" EndColumn="31" EndLine="8" Image="" Label="">
<PrimaryExpression BeginColumn="7" BeginLine="8" EndColumn="31" EndLine="8" Image="" Label="">
<PrimaryPrefix BeginColumn="7" BeginLine="8" EndColumn="24" EndLine="8" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="7" BeginLine="8" EndColumn="24" EndLine="8" Image="System.out.println" Label=""/>
</PrimaryPrefix>
<PrimarySuffix ArgumentCount="1" Arguments="true" ArrayDereference="false" BeginColumn="25" BeginLine="8" EndColumn="31" EndLine="8" Image="" Label="">
<Arguments ArgumentCount="1" BeginColumn="25" BeginLine="8" EndColumn="31" EndLine="8" Image="" Label="">
<ArgumentList BeginColumn="26" BeginLine="8" EndColumn="30" EndLine="8" Image="" Label="">
<Expression BeginColumn="26" BeginLine="8" EndColumn="30" EndLine="8" Image="" Label="">
<PrimaryExpression BeginColumn="26" BeginLine="8" EndColumn="30" EndLine="8" Image="" Label="">
<PrimaryPrefix BeginColumn="26" BeginLine="8" EndColumn="30" EndLine="8" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="26" BeginLine="8" EndColumn="30" EndLine="8" Image="m_foo" Label=""/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
</ArgumentList>
</Arguments>
</PrimarySuffix>
</PrimaryExpression>
</StatementExpression>
</Statement>
</BlockStatement>
<BlockStatement Allocation="false" BeginColumn="7" BeginLine="9" EndColumn="32" EndLine="9" Image="" Label="">
<Statement BeginColumn="7" BeginLine="9" EndColumn="32" EndLine="9" Image="" Label="">
<StatementExpression BeginColumn="7" BeginLine="9" EndColumn="31" EndLine="9" Image="" Label="">
<PrimaryExpression BeginColumn="7" BeginLine="9" EndColumn="31" EndLine="9" Image="" Label="">
<PrimaryPrefix BeginColumn="7" BeginLine="9" EndColumn="24" EndLine="9" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="7" BeginLine="9" EndColumn="24" EndLine="9" Image="System.out.println" Label=""/>
</PrimaryPrefix>
<PrimarySuffix ArgumentCount="1" Arguments="true" ArrayDereference="false" BeginColumn="25" BeginLine="9" EndColumn="31" EndLine="9" Image="" Label="">
<Arguments ArgumentCount="1" BeginColumn="25" BeginLine="9" EndColumn="31" EndLine="9" Image="" Label="">
<ArgumentList BeginColumn="26" BeginLine="9" EndColumn="30" EndLine="9" Image="" Label="">
<Expression BeginColumn="26" BeginLine="9" EndColumn="30" EndLine="9" Image="" Label="">
<PrimaryExpression BeginColumn="26" BeginLine="9" EndColumn="30" EndLine="9" Image="" Label="">
<PrimaryPrefix BeginColumn="26" BeginLine="9" EndColumn="30" EndLine="9" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="26" BeginLine="9" EndColumn="30" EndLine="9" Image="m_two" Label=""/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
</ArgumentList>
</Arguments>
</PrimarySuffix>
</PrimaryExpression>
</StatementExpression>
</Statement>
</BlockStatement>
<BlockStatement Allocation="false" BeginColumn="7" BeginLine="10" EndColumn="28" EndLine="10" Image="" Label="">
<Statement BeginColumn="7" BeginLine="10" EndColumn="28" EndLine="10" Image="" Label="">
<StatementExpression BeginColumn="7" BeginLine="10" EndColumn="27" EndLine="10" Image="" Label="">
<PrimaryExpression BeginColumn="7" BeginLine="10" EndColumn="27" EndLine="10" Image="" Label="">
<PrimaryPrefix BeginColumn="7" BeginLine="10" EndColumn="10" EndLine="10" Image="" Label="this" SuperModifier="false" ThisModifier="true"/>
<PrimarySuffix ArgumentCount="" Arguments="false" ArrayDereference="false" BeginColumn="11" BeginLine="10" EndColumn="20" EndLine="10" Image="calculate" Label=""/>
<PrimarySuffix ArgumentCount="1" Arguments="true" ArrayDereference="false" BeginColumn="21" BeginLine="10" EndColumn="27" EndLine="10" Image="" Label="">
<Arguments ArgumentCount="1" BeginColumn="21" BeginLine="10" EndColumn="27" EndLine="10" Image="" Label="">
<ArgumentList BeginColumn="22" BeginLine="10" EndColumn="26" EndLine="10" Image="" Label="">
<Expression BeginColumn="22" BeginLine="10" EndColumn="26" EndLine="10" Image="" Label="">
<PrimaryExpression BeginColumn="22" BeginLine="10" EndColumn="26" EndLine="10" Image="" Label="">
<PrimaryPrefix BeginColumn="22" BeginLine="10" EndColumn="26" EndLine="10" Image="" Label="" SuperModifier="false" ThisModifier="false">
<Name BeginColumn="22" BeginLine="10" EndColumn="26" EndLine="10" Image="m_foo" Label=""/>
</PrimaryPrefix>
</PrimaryExpression>
</Expression>
</ArgumentList>
</Arguments>
</PrimarySuffix>
</PrimaryExpression>
</StatementExpression>
</Statement>
</BlockStatement>
</Block>
</MethodDeclaration>
</ClassOrInterfaceBodyDeclaration>
</ClassOrInterfaceBody>
</ClassOrInterfaceDeclaration>
</TypeDeclaration>
</CompilationUnit>
I think you are using the contains() function because you have guessed incorrectly that it tests whether a set of strings contains a given string. Don’t guess, read the spec: that’s not what contains() does; rather, it tests whether one string contains another as a substring. To test whether a set of strings $S contains a string $T, use ($S = $T).