diff --git a/settings.gradle b/settings.gradle
index 932b8b2..5defb70 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -25,7 +25,7 @@ dependencyResolutionManagement {
             library('groovy-macro', 'org.apache.groovy', 'groovy-macro').versionRef('groovy')
             library('groovy-templates', 'org.apache.groovy', 'groovy-templates').versionRef('groovy')
             library('groovy-test', 'org.apache.groovy', 'groovy-test').versionRef('groovy')
-            library('marc', 'org.xbib', 'marc').version('2.9.14')
+            library('marc', 'org.xbib', 'marc').version('2.9.15')
         }
     }
 }
diff --git a/sru-client-jdk/build.gradle b/sru-client-jdk/build.gradle
new file mode 100644
index 0000000..092e34f
--- /dev/null
+++ b/sru-client-jdk/build.gradle
@@ -0,0 +1,3 @@
+dependencies {
+    implementation libs.marc
+}
diff --git a/sru-client-jdk/src/main/java/module-info.java b/sru-client-jdk/src/main/java/module-info.java
new file mode 100644
index 0000000..f6ef519
--- /dev/null
+++ b/sru-client-jdk/src/main/java/module-info.java
@@ -0,0 +1,6 @@
+module org.xbib.sru.client.jdk {
+    exports org.xbib.sru.client.jdk;
+    requires org.xbib.marc;
+    requires java.net.http;
+    requires java.logging;
+}
diff --git a/sru-client-jdk/src/main/java/org/xbib/sru/client/jdk/SRUClient.java b/sru-client-jdk/src/main/java/org/xbib/sru/client/jdk/SRUClient.java
index 2eff6aa..c1c504a 100644
--- a/sru-client-jdk/src/main/java/org/xbib/sru/client/jdk/SRUClient.java
+++ b/sru-client-jdk/src/main/java/org/xbib/sru/client/jdk/SRUClient.java
@@ -1,15 +1,18 @@
 package org.xbib.sru.client.jdk;
 
 import java.io.IOException;
-import java.io.Reader;
-import java.io.StringReader;
+import java.io.InputStream;
 import java.net.URI;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
 import java.util.function.Consumer;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
+import org.xbib.marc.Marc;
+import org.xbib.marc.MarcRecord;
 import org.xbib.sru.client.jdk.util.UrlBuilder;
 
 public class SRUClient {
@@ -35,7 +38,7 @@ public class SRUClient {
                                String recordSchema,
                                Integer startRecord,
                                Integer maximumRecords,
-                               Consumer<Reader> consumer) throws IOException, InterruptedException {
+                               Consumer<InputStream> consumer) throws IOException, InterruptedException {
         UrlBuilder url = UrlBuilder.fromUrl(builder.baseURL);
         url.queryParam(SRUConstants.OPERATION_PARAMETER, "searchRetrieve");
         url.queryParam(SRUConstants.VERSION_PARAMETER, "1.1");
@@ -50,22 +53,16 @@ public class SRUClient {
                 .header("user-agent", builder.userAgent != null ? builder.userAgent : "xbib SRU client")
                 .GET()
                 .build();
-        logger.log(Level.INFO, "sending " + httpRequest);
-        HttpResponse<String> httpResponse = httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofString());
+        logger.log(Level.FINE, "sending " + httpRequest);
+        HttpResponse<InputStream> httpResponse = httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofInputStream());
         int status = httpResponse.statusCode();
         logger.log(Level.FINE, "response status = " + status + " headers = " + httpResponse.headers());
-        String contentType = httpResponse.headers().firstValue("content-type").orElse(null);
         if (status == 200) {
-            String string = httpResponse.body();
-            if (string != null && string.length() > 0) {
-                consumer.accept(new StringReader(string));
-            }
+            InputStream inputStream = httpResponse.body();
+            consumer.accept(inputStream);
         }
     }
 
-    public void close() {
-    }
-
     public static class Builder {
 
         private String baseURL;
diff --git a/sru-client-jdk/src/test/java/org/xbib/sru/client/jdk/test/LVITest.java b/sru-client-jdk/src/test/java/org/xbib/sru/client/jdk/test/LVITest.java
new file mode 100644
index 0000000..a85b48b
--- /dev/null
+++ b/sru-client-jdk/src/test/java/org/xbib/sru/client/jdk/test/LVITest.java
@@ -0,0 +1,43 @@
+package org.xbib.sru.client.jdk.test;
+
+import org.junit.jupiter.api.Test;
+import org.xbib.marc.Marc;
+import org.xbib.marc.MarcRecord;
+import org.xbib.marc.MarcRecordIterator;
+import org.xbib.sru.client.jdk.SRUClient;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class LVITest {
+
+    private static final Logger logger = Logger.getLogger(LVITest.class.getName());
+
+    @Test
+    public void testLVI() throws IOException, InterruptedException {
+        SRUClient client = SRUClient.builder()
+                .setBaseURL("https://sru.hbz-nrw.de/lvi")
+                .build();
+        client.searchRetrieve("bib.personalName = \"Smith\"",
+                "marcxml",
+                1,
+                10,
+                this::dumpRecords);
+    }
+
+    private void dumpRecords(InputStream inputStream) {
+        MarcRecordIterator iterator = Marc.builder()
+                .setInputStream(inputStream)
+                .setCharset(StandardCharsets.UTF_8)
+                .xmlRecordIterator();
+        while (iterator.hasNext()) {
+            MarcRecord marcRecord = iterator.next();
+            logger.log(Level.INFO, marcRecord.toString());
+        }
+        // total number available after records are iterated, SRU numberOfRecords element may be located at bottom.
+        logger.log(Level.INFO, "total number of records = " + iterator.getTotalNumberOfRecords());
+    }
+}
diff --git a/z3950-asn1/src/main/java/org/xbib/asn1/BEREncoding.java b/z3950-asn1/src/main/java/org/xbib/asn1/BEREncoding.java
index 6be9cea..5c59914 100644
--- a/z3950-asn1/src/main/java/org/xbib/asn1/BEREncoding.java
+++ b/z3950-asn1/src/main/java/org/xbib/asn1/BEREncoding.java
@@ -77,6 +77,9 @@ public abstract class BEREncoding {
      */
     private int[] lengthEncoding;
 
+    public BEREncoding() {
+    }
+
     public int[] getIdentifierEncoding() {
         return identifierEncoding;
     }
diff --git a/z3950-client-jdk/src/main/java/module-info.java b/z3950-client-jdk/src/main/java/module-info.java
index a74e5aa..2c30006 100644
--- a/z3950-client-jdk/src/main/java/module-info.java
+++ b/z3950-client-jdk/src/main/java/module-info.java
@@ -1,5 +1,5 @@
 module org.xbib.z3950lib.client.jdk {
     exports org.xbib.z3950.client.jdk;
-    requires transitive org.xbib.z3950lib.client.api;
+    requires org.xbib.z3950lib.client.api;
     requires java.logging;
-}
\ No newline at end of file
+}
diff --git a/z3950-client-jdk/src/main/java/org/xbib/z3950/client/jdk/JDKZClient.java b/z3950-client-jdk/src/main/java/org/xbib/z3950/client/jdk/JDKZClient.java
index 73daa30..0dcd022 100644
--- a/z3950-client-jdk/src/main/java/org/xbib/z3950/client/jdk/JDKZClient.java
+++ b/z3950-client-jdk/src/main/java/org/xbib/z3950/client/jdk/JDKZClient.java
@@ -391,26 +391,37 @@ public class JDKZClient implements Client, Closeable {
 
         private String pass;
 
-        private long timeout = 5000;
+        private long timeout;
 
-        private String preferredRecordSyntax = "1.2.840.10003.5.10"; // marc21
+        private String preferredRecordSyntax;
 
-        private String resultSetName = "default";
+        private String resultSetName;
 
-        private String elementSetName = null;
+        private String elementSetName;
 
-        private String encoding = "ANSEL";
+        private String encoding;
 
-        private String format = "MARC21";
+        private String format;
 
-        private String type = "Bibliographic";
+        private String type;
 
-        private List<String> databases = Collections.singletonList("");
+        private List<String> databases;
 
-        private Integer preferredMessageSize = 10 * 1024 * 1024;
+        private Integer preferredMessageSize;
 
         private InitListener initListener;
 
+        private Builder() {
+            this.timeout = 5000;
+            this.preferredRecordSyntax = "1.2.840.10003.5.10"; // marc21
+            this.resultSetName = "default";
+            this.encoding = "ANSEL";
+            this.format = "MARC21";
+            this.type = "Bibliographic";
+            this.databases = Collections.singletonList("");
+            this.preferredMessageSize = 10 * 1024 * 1024;
+        }
+
         public Builder setHost(String host) {
             this.host = host;
             return this;
diff --git a/z3950-common/src/main/jacc/org/xbib/z3950/common/pqf/PQF.jacc b/z3950-common/src/main/jacc/org/xbib/z3950/common/pqf/PQF.jacc
index 3fe9b2c..77c97f9 100755
--- a/z3950-common/src/main/jacc/org/xbib/z3950/common/pqf/PQF.jacc
+++ b/z3950-common/src/main/jacc/org/xbib/z3950/common/pqf/PQF.jacc
@@ -1 +1,190 @@
-%{
import java.io.Reader;
import java.io.IOException;

/**

Mike Taylor, IndexData:

"Prefix Query Format (PQF), also known as
Prefix Query Notation (PQN) was defined in 1995, as part of the YAZ
toolkit, and has since become the de facto standard representation of
RPN queries."

 From: http://www.indexdata.com/yaz/doc/tools.tkl#PQF

 The grammar of the PQF is as follows:

     query ::= top-set query-struct.

     top-set ::= [ '@attrset' string ]

     query-struct ::= attr-spec | simple | complex | '@term' term-type query

     attr-spec ::= '@attr' [ string ] string query-struct

     complex ::= operator query-struct query-struct.

     operator ::= '@and' | '@or' | '@not' | '@prox' proximity.

     simple ::= result-set | term.

     result-set ::= '@set' string.

     term ::= string.

     proximity ::= exclusion distance ordered relation which-code unit-code.

     exclusion ::= '1' | '0' | 'void'.

     distance ::= integer.

     ordered ::= '1' | '0'.

     relation ::= integer.

     which-code ::= 'known' | 'private' | integer.

     unit-code ::= integer.

     term-type ::= 'general' | 'numeric' | 'string' | 'oid' | 'datetime' | 'null'.
    

 You will note that the syntax above is a fairly faithful representation of RPN, 
 except for the Attribute, which has been moved a step away from the term, 
 allowing you to associate one or more attributes with an entire query structure. 
 The parser will automatically apply the given attributes to each term as required.

 The @attr operator is followed by an attribute specification (attr-spec above). 
 The specification consists of an optional attribute set, an attribute 
 type-value pair and a sub-query. The attribute type-value pair is packed 
 in one string: an attribute type, an equals sign, and an attribute value, 
 like this: @attr 1=1003. The type is always an integer but the value may be 
 either an integer or a string (if it doesn't start with a digit character). 
 A string attribute-value is encoded as a Type-1 ``complex'' attribute with 
 the list of values containing the single string specified, and including 
 no semantic indicators. 

*/

%}
%class PQFParser
%interface PQFTokens
%package org.xbib.z3950.common.pqf

%token NL          
%token <String> OR
%token <String> AND
%token <String> NOT
%token <String> ATTR
%token <String> ATTRSET
%token <String> TERM
%token <String> SET
%token <String> VOID
%token <String> KNOWN
%token <String> PRIVATE
%token <String> TERMTYPE
%token <String> CHARSTRING1
%token <String> CHARSTRING2
%token <String> OPERATORS
%token <String> EQUALS
%token <Integer> INTEGER

%left AND
%left OR
%left NOT

%type <PQF> pqf
%type <Query> querystruct
%type <Expression> expression
%type <AttrStr> attrstr
%type <Term> term
%type <Setname> resultset

%start pqf

%%

pqf : ATTRSET CHARSTRING1 querystruct {
        this.pqf = new PQF($2, $3); 
        $$ = this.pqf;
    }
    | querystruct {
        this.pqf = new PQF($1); 
        $$ = this.pqf;
    }
;

querystruct : attrspec | simple | complex | TERM TERMTYPE pqf {
        $$ = new Query($3);
};

attrspec :  ATTR attrstr querystruct {
        $$ = new Query($2, $3);
    }
    | ATTR CHARSTRING1 attrstr querystruct {
        $$ = new Query($2, $3, $4);
    };

simple : resultset {
         $$ = new Query($1);
    }
    | term {
         $$ = new Query($1);
    };

complex : expression  {
         $$ = new Query($1);
    };

resultset : SET CHARSTRING1 {
        $$ = new Setname($2);
    };

term : CHARSTRING1 {
        $$ = new Term($1);
    }
    | CHARSTRING2 {
        $$ = new Term($1);
    }
    };

attrstr: INTEGER EQUALS INTEGER {
        $$ = new AttrStr($1, $3);
    }
    | INTEGER EQUALS CHARSTRING1 {
        $$ = new AttrStr($1, $3);
    };

expression: AND querystruct querystruct {
        $$ = new Expression($1, $2, $3);
    }
    | OR querystruct querystruct {
        $$ = new Expression($1, $2, $3);
    }
    | NOT querystruct querystruct {
        $$ = new Expression($1, $2, $3);
    }
;

%%

    private PQFLexer lexer;
	
    private PQF pqf;
	
    public PQFParser(Reader r) {
        this.lexer = new PQFLexer(r);
        lexer.nextToken();
    }

    public void yyerror(String error) {
        throw new SyntaxException("PQF error at " 
            + "[" + lexer.getLine() + "," + lexer.getColumn() +"]"
            + ": " +  error);
    }
    
    public PQF getResult()
    {
        return pqf;
    }

\ No newline at end of file
+%{
+import java.io.Reader;
+import java.io.IOException;
+import java.math.BigDecimal;
+
+/**
+
+Mike Taylor, IndexData:
+
+"Prefix Query Format (PQF), also known as
+Prefix Query Notation (PQN) was defined in 1995, as part of the YAZ
+toolkit, and has since become the de facto standard representation of
+RPN queries."
+
+ From: http://www.indexdata.com/yaz/doc/tools.tkl#PQF
+
+ The grammar of the PQF is as follows:
+
+     query ::= top-set query-struct.
+
+     top-set ::= [ '@attrset' string ]
+
+     query-struct ::= attr-spec | simple | complex | '@term' term-type query
+
+     attr-spec ::= '@attr' [ string ] string query-struct
+
+     complex ::= operator query-struct query-struct.
+
+     operator ::= '@and' | '@or' | '@not' | '@prox' proximity.
+
+     simple ::= result-set | term.
+
+     result-set ::= '@set' string.
+
+     term ::= string.
+
+     proximity ::= exclusion distance ordered relation which-code unit-code.
+
+     exclusion ::= '1' | '0' | 'void'.
+
+     distance ::= integer.
+
+     ordered ::= '1' | '0'.
+
+     relation ::= integer.
+
+     which-code ::= 'known' | 'private' | integer.
+
+     unit-code ::= integer.
+
+     term-type ::= 'general' | 'numeric' | 'string' | 'oid' | 'datetime' | 'null'.
+
+ You will note that the syntax above is a fairly faithful representation of RPN,
+ except for the Attribute, which has been moved a step away from the term,
+ allowing you to associate one or more attributes with an entire query structure.
+ The parser will automatically apply the given attributes to each term as required.
+
+ The @attr operator is followed by an attribute specification (attr-spec above).
+ The specification consists of an optional attribute set, an attribute
+ type-value pair and a sub-query. The attribute type-value pair is packed
+ in one string: an attribute type, an equals sign, and an attribute value,
+ like this: @attr 1=1003. The type is always an integer but the value may be
+ either an integer or a string (if it doesn't start with a digit character).
+ A string attribute-value is encoded as a Type-1 ``complex'' attribute with
+ the list of values containing the single string specified, and including
+ no semantic indicators.
+*/
+
+%}
+%class PQFParser
+%interface PQFTokens
+%package org.xbib.z3950.common.pqf
+
+%token NL
+%token <String> OR
+%token <String> AND
+%token <String> NOT
+%token <String> ATTR
+%token <String> ATTRSET
+%token <String> TERM
+%token <String> SET
+%token <String> VOID
+%token <String> KNOWN
+%token <String> PRIVATE
+%token <String> TERMTYPE
+%token <String> CHARSTRING1
+%token <String> CHARSTRING2
+%token <String> OPERATORS
+%token <String> EQUALS
+%token <BigDecimal> INTEGER
+
+%left AND
+%left OR
+%left NOT
+
+%type <PQF> pqf
+%type <Query> querystruct
+%type <Expression> expression
+%type <AttrStr> attrstr
+%type <Term> term
+%type <Setname> resultset
+
+%start pqf
+
+%%
+
+pqf : ATTRSET CHARSTRING1 querystruct {
+        this.pqf = new PQF($2, $3);
+        $$ = this.pqf;
+    }
+    | querystruct {
+        this.pqf = new PQF($1);
+        $$ = this.pqf;
+    }
+;
+
+querystruct : attrspec | simple | complex | TERM TERMTYPE pqf {
+        $$ = new Query($3);
+};
+
+attrspec :  ATTR attrstr querystruct {
+        $$ = new Query($2, $3);
+    }
+    | ATTR CHARSTRING1 attrstr querystruct {
+        $$ = new Query($2, $3, $4);
+    };
+
+simple : resultset {
+         $$ = new Query($1);
+    }
+    | term {
+         $$ = new Query($1);
+    };
+
+complex : expression  {
+         $$ = new Query($1);
+    };
+
+resultset : SET CHARSTRING1 {
+        $$ = new Setname($2);
+    };
+
+term : CHARSTRING1 {
+        $$ = new Term($1);
+    }
+    | CHARSTRING2 {
+        $$ = new Term($1);
+    }
+    | INTEGER {
+        $$ = new Term($1);
+    };
+
+attrstr: INTEGER EQUALS INTEGER {
+        $$ = new AttrStr($1, $3);
+    }
+    | INTEGER EQUALS CHARSTRING1 {
+        $$ = new AttrStr($1, $3);
+    };
+
+expression: AND querystruct querystruct {
+        $$ = new Expression($1, $2, $3);
+    }
+    | OR querystruct querystruct {
+        $$ = new Expression($1, $2, $3);
+    }
+    | NOT querystruct querystruct {
+        $$ = new Expression($1, $2, $3);
+    }
+;
+
+%%
+
+    private PQFLexer lexer;
+
+    private PQF pqf;
+
+    public PQFParser(Reader r) {
+        this.lexer = new PQFLexer(r);
+        lexer.nextToken();
+    }
+
+    public void yyerror(String error) {
+        throw new SyntaxException("PQF error at " +
+            "[" + lexer.getLine() + "," + lexer.getColumn() + "]" + ": " +  error);
+    }
+
+    public PQF getResult()
+    {
+        return pqf;
+    }
diff --git a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/AttrStr.java b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/AttrStr.java
index 2dec3d2..b501f41 100644
--- a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/AttrStr.java
+++ b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/AttrStr.java
@@ -1,22 +1,26 @@
 package org.xbib.z3950.common.pqf;
 
+import java.math.BigDecimal;
+
 /**
  * PQF abstract syntax tree.
  */
 public class AttrStr extends Node {
 
-    private Integer left;
-    private Integer right;
-    private String rightStr;
+    private final Integer left;
+    private final Integer right;
+    private final String rightStr;
 
-    public AttrStr(Integer left, Integer right) {
-        this.left = left;
-        this.right = right;
+    public AttrStr(BigDecimal left, BigDecimal right) {
+        this.left = left.intValue();
+        this.right = right.intValue();
+        this.rightStr = null;
     }
 
-    public AttrStr(Integer left, String right) {
-        this.left = left;
+    public AttrStr(BigDecimal left, String right) {
+        this.left = left.intValue();
         this.rightStr = right;
+        this.right = null;
     }
 
     @Override
diff --git a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Expression.java b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Expression.java
index 891c79d..a77d960 100644
--- a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Expression.java
+++ b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Expression.java
@@ -5,11 +5,11 @@ package org.xbib.z3950.common.pqf;
  */
 public class Expression extends Node {
 
-    private String op;
+    private final String op;
 
-    private Query q1;
+    private final Query q1;
 
-    private Query q2;
+    private final Query q2;
 
     public Expression(String op, Query q1, Query q2) {
         this.op = op;
diff --git a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Node.java b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Node.java
index 133f0f0..e601693 100644
--- a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Node.java
+++ b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Node.java
@@ -5,6 +5,9 @@ package org.xbib.z3950.common.pqf;
  */
 public abstract class Node {
 
+    public Node () {
+    }
+
     /**
      * Try to accept this node by a visitor.
      *
diff --git a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/PQFRPNGenerator.java b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/PQFRPNGenerator.java
index 477b363..9bba55f 100644
--- a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/PQFRPNGenerator.java
+++ b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/PQFRPNGenerator.java
@@ -23,7 +23,7 @@ import java.util.Stack;
  */
 public class PQFRPNGenerator implements Visitor {
 
-    private Stack<ASN1Any> result;
+    private final Stack<ASN1Any> result;
 
     private RPNQuery rpnQuery;
 
@@ -63,7 +63,7 @@ public class PQFRPNGenerator implements Visitor {
             any = !result.isEmpty() && result.peek() instanceof AttributeElement ? result.pop() : null;
         }
         operand.attrTerm.attributes = new AttributeList();
-        operand.attrTerm.attributes.value = attrs.toArray(new AttributeElement[attrs.size()]);
+        operand.attrTerm.attributes.value = attrs.toArray(new AttributeElement[0]);
         RPNStructure rpn = new RPNStructure();
         rpn.c_op = operand;
         if (attrs.size() > 0) {
diff --git a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Query.java b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Query.java
index db7f97b..089850f 100644
--- a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Query.java
+++ b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Query.java
@@ -8,7 +8,7 @@ import java.util.LinkedList;
 public class Query extends Node {
 
     private String attrschema;
-    private LinkedList<AttrStr> attrspec = new LinkedList<>();
+    private final LinkedList<AttrStr> attrspec = new LinkedList<>();
     private Query querystruct;
     private Setname setname;
     private Term term;
diff --git a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/SyntaxException.java b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/SyntaxException.java
index c2653bf..c0d247a 100644
--- a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/SyntaxException.java
+++ b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/SyntaxException.java
@@ -3,8 +3,8 @@ package org.xbib.z3950.common.pqf;
 /**
  * Syntax exception.
  */
+@SuppressWarnings("serial")
 public class SyntaxException extends RuntimeException {
-    private static final long serialVersionUID = -962913398056374183L;
 
     /**
      * Creates a new SyntaxException object.
diff --git a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Term.java b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Term.java
index 3234b15..e428619 100644
--- a/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Term.java
+++ b/z3950-common/src/main/java/org/xbib/z3950/common/pqf/Term.java
@@ -1,5 +1,7 @@
 package org.xbib.z3950.common.pqf;
 
+import java.math.BigDecimal;
+
 /**
  *
  */
@@ -11,6 +13,10 @@ public class Term extends Node {
         this.value = value;
     }
 
+    public Term(BigDecimal value) {
+        this.value = value.toString();
+    }
+
     public String getValue() {
         return value;
     }
diff --git a/z3950-common/src/main/jflex/org/xbib/z3950/common/pqf/PQF.jflex b/z3950-common/src/main/jflex/org/xbib/z3950/common/pqf/PQF.jflex
index 7c2409a..d3ccb96 100755
--- a/z3950-common/src/main/jflex/org/xbib/z3950/common/pqf/PQF.jflex
+++ b/z3950-common/src/main/jflex/org/xbib/z3950/common/pqf/PQF.jflex
@@ -1,6 +1,7 @@
 package org.xbib.z3950.common.pqf;
 
 import java.io.*;
+import java.math.BigDecimal;
 
 %%
 %class PQFLexer
@@ -105,7 +106,7 @@ TERMTYPE = "general" | "numeric" | "string" | "oid" | "datetime" | "null"
     }	
 
 <YYINITIAL>{INTEGER}    { 
-        yylval = Integer.parseInt(yytext());
+        yylval = new BigDecimal(yytext());
         return INTEGER; 
     }
 				
diff --git a/z3950-common/src/test/java/org/xbib/z3950/common/pqf/PQFParserTest.java b/z3950-common/src/test/java/org/xbib/z3950/common/pqf/PQFParserTest.java
index 6942add..8bb1407 100644
--- a/z3950-common/src/test/java/org/xbib/z3950/common/pqf/PQFParserTest.java
+++ b/z3950-common/src/test/java/org/xbib/z3950/common/pqf/PQFParserTest.java
@@ -35,7 +35,7 @@ class PQFParserTest {
             }
         }
         assertEquals(errors, 0);
-        assertEquals(ok, 17);
+        assertEquals(ok, 19);
     }
 
     /**
diff --git a/z3950-common/src/test/resources/org/xbib/z3950/common/pqf/pqf-must-succeed b/z3950-common/src/test/resources/org/xbib/z3950/common/pqf/pqf-must-succeed
index 35fc81f..b3f3033 100644
--- a/z3950-common/src/test/resources/org/xbib/z3950/common/pqf/pqf-must-succeed
+++ b/z3950-common/src/test/resources/org/xbib/z3950/common/pqf/pqf-must-succeed
@@ -6,6 +6,8 @@ dylan
 @set Result-1
 @and @set seta @set setb
 @attr 1=4 computer
+@attr 1=4 123456789
+@attr 1=8 123456789123456789123456789
 @attr 1=12 @attr 5=1 "abc1234567"
 @attr 1=4 @attr 4=1 "self portrait"
 @attrset exp1 @attr 1=1 CategoryList