Fix 'NPE thrown in editing constraints'-bug

Signed-off-by: Vasyl Razinkov <vasyl.razinkov@est.tech>
Change-Id: Ibbd8a3baa2a2bfdbd6e2c235db5a1d59875f3e6e
Issue-ID: SDC-4312

8 files changed, 73 insertions, 118 deletions

diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/operations/impl/PropertyOperation.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/operations/impl/PropertyOperation.java
index 97f9874301..d68a7706b6 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/operations/impl/PropertyOperation.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/operations/impl/PropertyOperation.java
@@ -19,12 +19,14 @@
  */
 package org.openecomp.sdc.be.model.operations.impl;
 
+import static org.openecomp.sdc.be.model.tosca.constraints.ConstraintUtil.convertToComparable;
 import static org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode.BUSINESS_PROCESS_ERROR;
 
 import com.fasterxml.jackson.core.ObjectCodec;
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonDeserializationContext;
@@ -91,6 +93,7 @@ import org.openecomp.sdc.be.model.operations.api.DerivedFromOperation;
 import org.openecomp.sdc.be.model.operations.api.IPropertyOperation;
 import org.openecomp.sdc.be.model.operations.api.StorageOperationStatus;
 import org.openecomp.sdc.be.model.tosca.ToscaPropertyType;
+import org.openecomp.sdc.be.model.tosca.ToscaType;
 import org.openecomp.sdc.be.model.tosca.constraints.EqualConstraint;
 import org.openecomp.sdc.be.model.tosca.constraints.GreaterOrEqualConstraint;
 import org.openecomp.sdc.be.model.tosca.constraints.GreaterThanConstraint;
@@ -2139,8 +2142,8 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
             JsonArray jsonArray = new JsonArray();
             if (src instanceof InRangeConstraint) {
                 InRangeConstraint rangeConstraint = (InRangeConstraint) src;
-                jsonArray.add(JsonParser.parseString(String.valueOf(rangeConstraint.getRangeMinValue())));
-                jsonArray.add(JsonParser.parseString(String.valueOf(rangeConstraint.getRangeMaxValue())));
+                jsonArray.add(JsonParser.parseString(String.valueOf(rangeConstraint.getMin())));
+                jsonArray.add(JsonParser.parseString(String.valueOf(rangeConstraint.getMax())));
                 result.add("inRange", jsonArray);
             } else if (src instanceof GreaterThanConstraint) {
                 GreaterThanConstraint greaterThanConstraint = (GreaterThanConstraint) src;
@@ -2163,8 +2166,6 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
 
     public static class PropertyConstraintDeserialiser implements JsonDeserializer<PropertyConstraint> {
 
-        private static final String THE_VALUE_OF_GREATER_THAN_CONSTRAINT_IS_NULL = "The value of GreaterThanConstraint is null";
-
         @Override
         public PropertyConstraint deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
             PropertyConstraint propertyConstraint = null;
@@ -2184,45 +2185,40 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                 if (typedValue != null) {
                                     log.debug("Before adding value to EqualConstraint object. value = {}", typedValue);
                                     propertyConstraint = new EqualConstraint(typedValue);
-                                    break;
                                 } else {
-                                    log.warn("The value of equal constraint is null");
+                                    log.warn("The value of EqualConstraint is null");
                                 }
                                 break;
                             case IN_RANGE:
-                                if (typedValue != null) {
-                                    if (typedValue instanceof ArrayList) {
-                                        ArrayList rangeArray = (ArrayList) typedValue;
-                                        if (rangeArray.size() != 2 || rangeArray.contains("")) {
-                                            log.error("The range constraint content is invalid. value = {}", typedValue);
-                                            throw new JsonSyntaxException("The range constraint content is invalid");
-                                        } else {
-                                            InRangeConstraint rangeConstraint = new InRangeConstraint();
-                                            Object minValue = rangeArray.get(0);
-                                            Object maxValue = rangeArray.get(1);
-                                            rangeConstraint.setRangeMinValue(minValue);
-                                            rangeConstraint.setRangeMaxValue(maxValue);
-                                            propertyConstraint = rangeConstraint;
-                                        }
+                                if (typedValue instanceof ArrayList) {
+                                    List<Object> rangeArray = (ArrayList<Object>) typedValue;
+                                    if (rangeArray.size() != 2 || rangeArray.contains("")) {
+                                        log.error("The range constraint content is invalid. value = {}", typedValue);
+                                        throw new JsonSyntaxException("The range constraint content is invalid");
+                                    } else {
+                                        Object minValue = rangeArray.get(0);
+                                        Object maxValue = rangeArray.get(1);
+                                        InRangeConstraint rangeConstraint = new InRangeConstraint(Lists.newArrayList(minValue, maxValue));
+                                        rangeConstraint.setMin(convertToComparable(ToscaType.RANGE, String.valueOf(minValue)));
+                                        rangeConstraint.setMax(convertToComparable(ToscaType.RANGE, String.valueOf(maxValue)));
+                                        propertyConstraint = rangeConstraint;
                                     }
                                 } else {
-                                    log.warn(THE_VALUE_OF_GREATER_THAN_CONSTRAINT_IS_NULL);
+                                    log.warn("The value of InRangeConstraint is null");
                                 }
                                 break;
                             case GREATER_THAN:
                                 if (typedValue != null) {
                                     log.debug("Before adding value to GreaterThanConstraint object. value = {}", typedValue);
                                     propertyConstraint = new GreaterThanConstraint(typedValue);
-                                    break;
                                 } else {
-                                    log.warn(THE_VALUE_OF_GREATER_THAN_CONSTRAINT_IS_NULL);
+                                    log.warn("The value of GreaterThanConstraint is null");
                                 }
                                 break;
                             case LESS_THAN:
                                 if (typedValue != null) {
                                     log.debug("Before adding value to LessThanConstraint object. value = {}", typedValue);
                                     propertyConstraint = new LessThanConstraint(typedValue);
-                                    break;
                                 } else {
                                     log.warn("The value of LessThanConstraint is null");
                                 }
@@ -2231,7 +2227,6 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                 if (typedValue != null) {
                                     log.debug("Before adding value to GreaterThanConstraint object. value = {}", typedValue);
                                     propertyConstraint = new GreaterOrEqualConstraint(typedValue);
-                                    break;
                                 } else {
                                     log.warn("The value of GreaterOrEqualConstraint is null");
                                 }
@@ -2241,12 +2236,12 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                     log.debug("Before adding value to LessOrEqualConstraint object. value = {}", typedValue);
                                     propertyConstraint = new LessOrEqualConstraint(typedValue);
                                 } else {
-                                    log.warn(THE_VALUE_OF_GREATER_THAN_CONSTRAINT_IS_NULL);
+                                    log.warn("The value of LessOrEqualConstraint is null");
                                 }
                                 break;
                             case VALID_VALUES:
-                                if (typedValue != null) {
-                                    ArrayList validValuesArray = (ArrayList) typedValue;
+                                if (typedValue instanceof ArrayList) {
+                                    List<Object> validValuesArray = (ArrayList<Object>) typedValue;
                                     if (validValuesArray.size() == 0 || validValuesArray.contains("")) {
                                         log.error("The valid values constraint content is invalid. value = {}", typedValue);
                                         throw new JsonSyntaxException("The valid values constraint content is invalid");
@@ -2255,6 +2250,8 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                         vvConstraint.setValidValues(validValuesArray);
                                         propertyConstraint = vvConstraint;
                                     }
+                                } else {
+                                    log.warn("The value of ValidValuesConstraint is null");
                                 }
                                 break;
                             case LENGTH:
@@ -2262,9 +2259,8 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                     int asInt = value.getAsInt();
                                     log.debug("Before adding value to length constraint. value = {}", asInt);
                                     propertyConstraint = new LengthConstraint(asInt);
-                                    break;
                                 } else {
-                                    log.warn("The value of length constraint is null");
+                                    log.warn("The value of LengthConstraint is null");
                                 }
                                 break;
                             case MIN_LENGTH:
@@ -2272,7 +2268,6 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                     int asInt = value.getAsInt();
                                     log.debug("Before adding value to Min Length object. value = {}", asInt);
                                     propertyConstraint = new MinLengthConstraint(asInt);
-                                    break;
                                 } else {
                                     log.warn("The value of MinLengthConstraint is null");
                                 }
@@ -2282,9 +2277,8 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                     int asInt = value.getAsInt();
                                     log.debug("Before adding value to max length constraint. value = {}", asInt);
                                     propertyConstraint = new MaxLengthConstraint(asInt);
-                                    break;
                                 } else {
-                                    log.warn("The value of max length constraint is null");
+                                    log.warn("The value of MaxLengthConstraint is null");
                                 }
                                 break;
                             case PATTERN:
@@ -2292,9 +2286,8 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                                     String asString = value.getAsString();
                                     log.debug("Before adding value to PatternConstraint object. value = {}", asString);
                                     propertyConstraint = new PatternConstraint(asString);
-                                    break;
                                 } else {
-                                    log.warn("The value of pattern constraint is null");
+                                    log.warn("The value of PatternConstraint is null");
                                 }
                                 break;
                             default:
@@ -2448,17 +2441,11 @@ public class PropertyOperation extends AbstractOperation implements IPropertyOpe
                 if (rangeArray.size() != 2) {
                     log.error("The range constraint content is invalid. value = {}", value);
                 } else {
-                    InRangeConstraint rangeConstraint = new InRangeConstraint();
                     String minValue = rangeArray.get(0).asText();
-                    String maxValue;
-                    JsonNode maxElement = rangeArray.get(1);
-                    if (maxElement.isNull()) {
-                        maxValue = null;
-                    } else {
-                        maxValue = maxElement.asText();
-                    }
-                    rangeConstraint.setRangeMinValue(minValue);
-                    rangeConstraint.setRangeMaxValue(maxValue);
+                    String maxValue = rangeArray.get(1).asText();
+                    InRangeConstraint rangeConstraint = new InRangeConstraint(Lists.newArrayList(minValue, maxValue));
+                    rangeConstraint.setMin(convertToComparable(ToscaType.RANGE, minValue));
+                    rangeConstraint.setMax(convertToComparable(ToscaType.RANGE, maxValue));
                     return rangeConstraint;
                 }
             }
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/AbstractComparablePropertyConstraint.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/AbstractComparablePropertyConstraint.java
index d7eb6e69c6..4a8c742de9 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/AbstractComparablePropertyConstraint.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/AbstractComparablePropertyConstraint.java
@@ -50,8 +50,6 @@ public abstract class AbstractComparablePropertyConstraint extends AbstractPrope
 
     public abstract boolean validateValueType(String propertyType) throws ConstraintValueDoNotMatchPropertyTypeException;
 
-    public abstract String getConstraintValueAsString();
-
     public abstract void changeConstraintValueTypeTo(String propertyType) throws ConstraintValueDoNotMatchPropertyTypeException;
 
     @Override
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/EqualConstraint.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/EqualConstraint.java
index f5a9f847ff..e1c55ac829 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/EqualConstraint.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/EqualConstraint.java
@@ -19,10 +19,9 @@
  */
 package org.openecomp.sdc.be.model.tosca.constraints;
 
-import java.io.Serializable;
 import javax.validation.constraints.NotNull;
-import lombok.Setter;
 import lombok.Getter;
+import lombok.Setter;
 import org.openecomp.sdc.be.datatypes.enums.ConstraintType;
 import org.openecomp.sdc.be.model.PropertyConstraint;
 import org.openecomp.sdc.be.model.tosca.ToscaType;
@@ -32,7 +31,7 @@ import org.openecomp.sdc.be.model.tosca.constraints.exception.ConstraintViolatio
 import org.openecomp.sdc.be.model.tosca.constraints.exception.PropertyConstraintException;
 
 @SuppressWarnings("serial")
-public class EqualConstraint extends AbstractPropertyConstraint implements Serializable {
+public class EqualConstraint extends AbstractComparablePropertyConstraint {
 
     @Getter
     @Setter
@@ -49,6 +48,7 @@ public class EqualConstraint extends AbstractPropertyConstraint implements Seria
     public void initialize(ToscaType propertyType) throws ConstraintValueDoNotMatchPropertyTypeException {
         if (propertyType.isValidValue(String.valueOf(equal))) {
             typed = propertyType.convert(String.valueOf(equal));
+            initialize(String.valueOf(equal), propertyType);
         } else {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
                 "constraintValue constraint has invalid value <" + equal + "> property type is <" + propertyType.toString() + ">");
@@ -56,19 +56,6 @@ public class EqualConstraint extends AbstractPropertyConstraint implements Seria
     }
 
     @Override
-    public void validate(Object propertyValue) throws ConstraintViolationException {
-        if (propertyValue == null) {
-            if (typed != null) {
-                fail(null);
-            }
-        } else if (typed == null) {
-            fail(propertyValue);
-        } else if (!typed.equals(propertyValue)) {
-            fail(propertyValue);
-        }
-    }
-
-    @Override
     public ConstraintType getConstraintType() {
         return ConstraintType.EQUAL;
     }
@@ -87,15 +74,33 @@ public class EqualConstraint extends AbstractPropertyConstraint implements Seria
         return getErrorMessage(toscaType, e, propertyName, "%s property value must be %s", String.valueOf(equal));
     }
 
+    @Override
+    protected void doValidate(Object propertyValue) throws ConstraintViolationException {
+        if (propertyValue == null) {
+            if (typed != null) {
+                fail(null);
+            }
+        } else if (typed == null) {
+            fail(propertyValue);
+        } else if (!typed.equals(propertyValue)) {
+            fail(propertyValue);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(equal);
+    }
+
     public boolean validateValueType(String propertyType) throws ConstraintValueDoNotMatchPropertyTypeException {
         ToscaType toscaType = ToscaType.getToscaType(propertyType);
         if (toscaType == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "equal constraint has invalid values <" + equal.toString() + "> property type is <" + propertyType + ">");
+                "equal constraint has invalid values <" + equal.toString() + "> property type is <" + propertyType + ">");
         }
         if (equal == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "equal constraint has invalid value <> property type is <" + propertyType + ">");
+                "equal constraint has invalid value <> property type is <" + propertyType + ">");
         }
         return toscaType.isValueTypeValid(equal);
     }
@@ -106,7 +111,7 @@ public class EqualConstraint extends AbstractPropertyConstraint implements Seria
             equal = toscaType.convert(String.valueOf(equal));
         } catch (Exception e) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "equal constraint has invalid values <" + equal.toString() + "> property type is <" + propertyType + ">");
+                "equal constraint has invalid values <" + equal.toString() + "> property type is <" + propertyType + ">");
         }
     }
 }
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterOrEqualConstraint.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterOrEqualConstraint.java
index b45cf9791e..e90f1c0bf2 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterOrEqualConstraint.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterOrEqualConstraint.java
@@ -70,17 +70,17 @@ public class GreaterOrEqualConstraint extends AbstractComparablePropertyConstrai
         ToscaType toscaType = ToscaType.getToscaType(propertyType);
         if (toscaType == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "greaterOrEqual constraint has invalid values <" + greaterOrEqual.toString() + "> property type is <" + propertyType + ">");
+                "greaterOrEqual constraint has invalid values <" + greaterOrEqual.toString() + "> property type is <" + propertyType + ">");
         }
         if (greaterOrEqual == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "greaterOrEqual constraint has invalid value <> property type is <" + propertyType + ">");
+                "greaterOrEqual constraint has invalid value <> property type is <" + propertyType + ">");
         }
         return toscaType.isValueTypeValid(greaterOrEqual);
     }
 
     @Override
-    public String getConstraintValueAsString() {
+    public String toString() {
         return String.valueOf(greaterOrEqual);
     }
 
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterThanConstraint.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterThanConstraint.java
index 9d638cfb3f..e1293d1bb1 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterThanConstraint.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/GreaterThanConstraint.java
@@ -70,17 +70,17 @@ public class GreaterThanConstraint<T> extends AbstractComparablePropertyConstrai
         ToscaType toscaType = ToscaType.getToscaType(propertyType);
         if (toscaType == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "greaterThan constraint has invalid values <" + greaterThan.toString() + "> property type is <" + propertyType + ">");
+                "greaterThan constraint has invalid values <" + greaterThan.toString() + "> property type is <" + propertyType + ">");
         }
         if (greaterThan == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "greaterThan constraint has invalid value <> property type is <" + propertyType + ">");
+                "greaterThan constraint has invalid value <> property type is <" + propertyType + ">");
         }
         return toscaType.isValueTypeValid(greaterThan);
     }
 
     @Override
-    public String getConstraintValueAsString() {
+    public String toString() {
         return String.valueOf(greaterThan);
     }
 
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/InRangeConstraint.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/InRangeConstraint.java
index 2567cec772..26d75bd134 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/InRangeConstraint.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/InRangeConstraint.java
@@ -19,9 +19,8 @@
  */
 package org.openecomp.sdc.be.model.tosca.constraints;
 
-import com.google.common.collect.Lists;
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import java.util.List;
-import javax.validation.constraints.NotNull;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.NonNull;
@@ -41,7 +40,9 @@ public class InRangeConstraint extends AbstractPropertyConstraint {
 
     @NonNull
     private List<Object> inRange;
+    @JsonIgnore
     private Comparable min;
+    @JsonIgnore
     private Comparable max;
 
     public InRangeConstraint(List<Object> inRange) {
@@ -50,9 +51,7 @@ public class InRangeConstraint extends AbstractPropertyConstraint {
 
     @Override
     public void initialize(ToscaType propertyType) throws ConstraintValueDoNotMatchPropertyTypeException {
-        // Perform verification that the property type is supported for
-
-        // comparison
+        // Perform verification that the property type is supported for comparison
         ConstraintUtil.checkComparableType(propertyType);
         if (inRange == null || inRange.size() != 2) {
             throw new ConstraintValueDoNotMatchPropertyTypeException("In range constraint must have two elements.");
@@ -94,40 +93,6 @@ public class InRangeConstraint extends AbstractPropertyConstraint {
     public void validateValueOnUpdate(PropertyConstraint newConstraint) throws PropertyConstraintException {
     }
 
-    @NotNull
-    public Object getRangeMinValue() {
-        if (inRange != null) {
-            return inRange.get(0);
-        } else {
-            return null;
-        }
-    }
-
-    public void setRangeMinValue(Object minValue) {
-        if (inRange == null) {
-            inRange = Lists.newArrayList(minValue, null);
-        } else {
-            inRange.set(0, minValue);
-        }
-    }
-
-    @NotNull
-    public Object getRangeMaxValue() {
-        if (inRange != null) {
-            return inRange.get(1);
-        } else {
-            return null;
-        }
-    }
-
-    public void setRangeMaxValue(Object maxValue) {
-        if (inRange == null) {
-            inRange = Lists.newArrayList(null, maxValue);
-        } else {
-            inRange.set(1, maxValue);
-        }
-    }
-
     @Override
     public String getErrorMessage(ToscaType toscaType, ConstraintFunctionalException e, String propertyName) {
         return getErrorMessage(toscaType, e, propertyName, "%s property value must be in a range of %s", String.valueOf(min),
@@ -158,7 +123,7 @@ public class InRangeConstraint extends AbstractPropertyConstraint {
             inRange.replaceAll(obj -> toscaType.convert(String.valueOf(obj)));
         } catch (Exception e) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "inRange constraint has invalid values <" + inRange + "> property type is <" + propertyType + ">");
+                "inRange constraint has invalid values <" + inRange + "> property type is <" + propertyType + ">");
         }
     }
 }
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessOrEqualConstraint.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessOrEqualConstraint.java
index 0f64a4f9f5..3830ddf811 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessOrEqualConstraint.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessOrEqualConstraint.java
@@ -70,17 +70,17 @@ public class LessOrEqualConstraint<T> extends AbstractComparablePropertyConstrai
         ToscaType toscaType = ToscaType.getToscaType(propertyType);
         if (toscaType == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "lessOrEqual constraint has invalid values <" + lessOrEqual.toString() + "> property type is <" + propertyType + ">");
+                "lessOrEqual constraint has invalid values <" + lessOrEqual.toString() + "> property type is <" + propertyType + ">");
         }
         if (lessOrEqual == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "lessOrEqual constraint has invalid value <> property type is <" + propertyType + ">");
+                "lessOrEqual constraint has invalid value <> property type is <" + propertyType + ">");
         }
         return toscaType.isValueTypeValid(lessOrEqual);
     }
 
     @Override
-    public String getConstraintValueAsString() {
+    public String toString() {
         return String.valueOf(lessOrEqual);
     }
 
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessThanConstraint.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessThanConstraint.java
index 92ab9278b2..f3e283c98e 100644
--- a/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessThanConstraint.java
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/tosca/constraints/LessThanConstraint.java
@@ -70,17 +70,17 @@ public class LessThanConstraint extends AbstractComparablePropertyConstraint {
         ToscaType toscaType = ToscaType.getToscaType(propertyType);
         if (toscaType == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "lessThan constraint has invalid values <" + lessThan.toString() + "> property type is <" + propertyType + ">");
+                "lessThan constraint has invalid values <" + lessThan.toString() + "> property type is <" + propertyType + ">");
         }
         if (lessThan == null) {
             throw new ConstraintValueDoNotMatchPropertyTypeException(
-                    "lessThan constraint has invalid value <> property type is <" + propertyType + ">");
+                "lessThan constraint has invalid value <> property type is <" + propertyType + ">");
         }
         return toscaType.isValueTypeValid(lessThan);
     }
 
     @Override
-    public String getConstraintValueAsString() {
+    public String toString() {
         return String.valueOf(lessThan);
     }