Minor fixes (presto)

plugins/org.jkiss.dbeaver.ext.sqlite/src/org/jkiss/dbeaver/ext/sqlite/model/SQLiteTableColumn.java

@@ -18,7 +18,7 @@ package org.jkiss.dbeaver.ext.sqlite.model;
 
 import org.jkiss.dbeaver.ext.generic.model.GenericTableBase;
 import org.jkiss.dbeaver.ext.generic.model.GenericTableColumn;
-import org.jkiss.dbeaver.model.impl.DBPositiveNumberTransformer;
+import org.jkiss.dbeaver.model.impl.DBDummyNumberTransformer;
 import org.jkiss.dbeaver.model.meta.Property;
 
 public class SQLiteTableColumn extends GenericTableColumn {
@@ -33,7 +33,7 @@ public class SQLiteTableColumn extends GenericTableColumn {
         return super.isAutoGenerated();
     }
 
-    @Property(viewable = true, editable = true, order = 40, valueRenderer = DBPositiveNumberTransformer.class)
+    @Property(viewable = true, editable = true, order = 40, valueRenderer = DBDummyNumberTransformer.class)
     @Override
     public long getMaxLength() {
         return super.getMaxLength();

plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/DBDummyNumberTransformer.java

+/*
+ * DBeaver - Universal Database Manager
+ * Copyright (C) 2010-2019 Serge Rider (serge@jkiss.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jkiss.dbeaver.model.impl;
+
+import org.jkiss.dbeaver.model.meta.IPropertyValueTransformer;
+import org.jkiss.dbeaver.model.struct.DBSObject;
+
+/**
+ * Shows numeric value if it is not zero and not MAX_VALUE
+ */
+public class DBDummyNumberTransformer implements IPropertyValueTransformer<DBSObject, Number> {
+
+
+    @Override
+    public Number transform(DBSObject object, Number value) {
+        if (value == null) {
+            return null;
+        }
+        if (value instanceof Double && (value.doubleValue() == 0.0 || value.doubleValue() == Double.MAX_VALUE)) {
+            return null;
+        } else if (value instanceof Float && (value.floatValue() == 0.0 || value.floatValue() == Float.MAX_VALUE)) {
+            return null;
+        } else if ((value.longValue() == 0 || value.longValue() == Long.MAX_VALUE || value.longValue() == Integer.MAX_VALUE)) {
+            return null;
+        }
+
+        return value;
+    }
+}

plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/jdbc/cache/JDBCCompositeCache.java

@@ -33,6 +33,7 @@ import org.jkiss.dbeaver.model.struct.cache.AbstractObjectCache;
 import org.jkiss.utils.CommonUtils;
 
 import java.sql.SQLException;
+import java.sql.SQLFeatureNotSupportedException;
 import java.util.*;
 
 /**
@@ -344,7 +345,11 @@ public abstract class JDBCCompositeCache<
             }
         }
         catch (SQLException ex) {
-            throw new DBException(ex, dataSource);
+            if (ex instanceof SQLFeatureNotSupportedException) {
+                log.debug("Error reading cache: feature not supported", ex);
+            } else {
+                throw new DBException(ex, dataSource);
+            }
         }
 
         if (monitor.isCanceled()) {

plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/jdbc/struct/JDBCTableColumn.java

@@ -26,6 +26,7 @@ import org.jkiss.dbeaver.model.exec.DBCResultSet;
 import org.jkiss.dbeaver.model.exec.DBCSession;
 import org.jkiss.dbeaver.model.exec.DBCStatement;
 import org.jkiss.dbeaver.model.exec.DBCStatementType;
+import org.jkiss.dbeaver.model.impl.DBDummyNumberTransformer;
 import org.jkiss.dbeaver.model.impl.DBObjectNameCaseTransformer;
 import org.jkiss.dbeaver.model.meta.IPropertyValueListProvider;
 import org.jkiss.dbeaver.model.meta.Property;
@@ -37,7 +38,10 @@ import org.jkiss.dbeaver.model.struct.rdb.DBSTableColumn;
 import org.jkiss.dbeaver.model.virtual.DBVUtils;
 import org.jkiss.utils.CommonUtils;
 
-import java.util.*;
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+import java.util.TreeSet;
 
 /**
  * JDBC abstract table column
@@ -132,7 +136,7 @@ public abstract class JDBCTableColumn<TABLE_TYPE extends DBSEntity> extends JDBC
         }
     }
 
-    @Property(viewable = true, editable = true, order = 40)
+    @Property(viewable = true, editable = true, order = 40, valueRenderer = DBDummyNumberTransformer.class)
     @Override
     public long getMaxLength()
     {

plugins/org.jkiss.dbeaver.ui.editors.data/src/org/jkiss/dbeaver/ui/data/registry/ValueManagerRegistry.java

@@ -28,6 +28,7 @@ import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
 import org.jkiss.dbeaver.model.struct.DBSTypedObject;
 import org.jkiss.dbeaver.ui.data.IStreamValueManager;
 import org.jkiss.dbeaver.ui.data.IValueManager;
+import org.jkiss.dbeaver.ui.data.managers.DefaultValueManager;
 import org.jkiss.utils.CommonUtils;
 import org.jkiss.utils.MimeType;
 
@@ -79,7 +80,7 @@ public class ValueManagerRegistry {
             manager = findManager(dataSource, type, valueType, false, false);
         }
         if (manager == null) {
-            throw new IllegalStateException("Can't find default data manager for " + type);
+            return DefaultValueManager.INSTANCE;
         }
         return manager;
     }