[10/30] marmotta git commit: MARMOTTA-608: simple patch for avoiding project empty expressions

[wikier]

MARMOTTA-608: simple patch for avoiding project empty expressions


Project: http://git-wip-us.apache.org/repos/asf/marmotta/repo
Commit: http://git-wip-us.apache.org/repos/asf/marmotta/commit/8ac1d06c
Tree: http://git-wip-us.apache.org/repos/asf/marmotta/tree/8ac1d06c
Diff: http://git-wip-us.apache.org/repos/asf/marmotta/diff/8ac1d06c

Branch: refs/heads/MARMOTTA-588
Commit: 8ac1d06c62fde2a71456be4a3ad401fe5432890a
Parents: 4708f48
Author: Sergio Fernández <wik...@apache.org>
Authored: Wed Apr 8 19:05:03 2015 +0200
Committer: Sergio Fernández <wik...@apache.org>
Committed: Wed Apr 8 19:05:03 2015 +0200

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 .../org/apache/marmotta/kiwi/sparql/builder/SQLBuilder.java   | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
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http://git-wip-us.apache.org/repos/asf/marmotta/blob/8ac1d06c/libraries/kiwi/kiwi-sparql/src/main/java/org/apache/marmotta/kiwi/sparql/builder/SQLBuilder.java
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diff --git 
a/libraries/kiwi/kiwi-sparql/src/main/java/org/apache/marmotta/kiwi/sparql/builder/SQLBuilder.java
 
b/libraries/kiwi/kiwi-sparql/src/main/java/org/apache/marmotta/kiwi/sparql/builder/SQLBuilder.java
index 3e64836..933fdda 100644
--- 
a/libraries/kiwi/kiwi-sparql/src/main/java/org/apache/marmotta/kiwi/sparql/builder/SQLBuilder.java
+++ 
b/libraries/kiwi/kiwi-sparql/src/main/java/org/apache/marmotta/kiwi/sparql/builder/SQLBuilder.java
@@ -619,13 +619,16 @@ public class SQLBuilder {
         for(SQLVariable v : vars) {
             if(v.getProjectionType() != ValueType.NONE && 
(projectedVars.isEmpty() || projectedVars.contains(v.getSparqlName()))) {
                 String projectedName = v.getName();
-                String fromName = v.getExpressions().get(0);
 
-                projections.add(fromName + " AS " + projectedName);
+                if (v.getExpressions() != null && v.getExpressions().size() > 
0) {
+                    String fromName = v.getExpressions().get(0);
+                    projections.add(fromName + " AS " + projectedName);
+                }
 
                 if(v.getLiteralTypeExpression() != null) {
                     projections.add(v.getLiteralTypeExpression() + " AS " + 
projectedName + "_TYPE");
                 }
+                
                 if(v.getLiteralLangExpression() != null) {
                     projections.add(v.getLiteralLangExpression() + " AS " + 
projectedName + "_LANG");
                 }