remove not used BaseTask class

BaseTask class serves only as JavaDelegate implementation provider, should be removed

Change-Id: I46f56cb850d12e4ef395db9429297d05f3a51b37
Issue-ID: SO-2187
Signed-off-by: Lukasz Muszkieta <lukasz.muszkieta@nokia.com>

1 files changed, 0 insertions, 422 deletions

diff --git a/bpmn/MSOCoreBPMN/src/main/java/org/onap/so/bpmn/core/BaseTask.java b/bpmn/MSOCoreBPMN/src/main/java/org/onap/so/bpmn/core/BaseTask.java
deleted file mode 100644
index 1442099286..0000000000
--- a/bpmn/MSOCoreBPMN/src/main/java/org/onap/so/bpmn/core/BaseTask.java
+++ /dev/null
@@ -1,422 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * ONAP - SO
- * ================================================================================
- * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
- * ================================================================================
- * 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.
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.so.bpmn.core;
-
-import org.camunda.bpm.engine.delegate.DelegateExecution;
-import org.camunda.bpm.engine.delegate.Expression;
-import org.camunda.bpm.engine.delegate.JavaDelegate;
-import org.onap.so.bpmn.core.internal.VariableNameExtractor;
-
-/**
- * Base class for service tasks.
- */
-public class BaseTask implements JavaDelegate {
-
-    /**
-     * Get the value of a required field. This method throws MissingInjectedFieldException if the expression is null,
-     * and BadInjectedFieldException if the expression evaluates to a null value.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value
-     */
-    protected Object getField(Expression expression, DelegateExecution execution, String fieldName) {
-        return getFieldImpl(expression, execution, fieldName, false);
-    }
-
-    /**
-     * Gets the value of an optional field. There are three conditions in which this method returns null:
-     * <p>
-     * <ol>
-     * <li>The expression itself is null (i.e. the field is missing altogether.</li>
-     * <li>The expression evaluates to a null value.</li>
-     * <li>The expression references a single variable which has not been set.</li>
-     * </ol>
-     * <p>
-     * Examples:<br>
-     * Expression ${x} when x is null: return null<br>
-     * Expression ${x} when x is unset: return null<br>
-     * Expression ${x+y} when x and/or y are unset: exception<br>
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value, possibly null
-     */
-    protected Object getOptionalField(Expression expression, DelegateExecution execution, String fieldName) {
-        return getFieldImpl(expression, execution, fieldName, true);
-    }
-
-    /**
-     * Get the value of a required output variable field. This method throws MissingInjectedFieldException if the
-     * expression is null, and BadInjectedFieldException if the expression produces a null or illegal variable name.
-     * Legal variable names contain only letters, numbers, and the underscore character ('_').
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the output variable name
-     */
-    protected String getOutputField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, false);
-        if (o instanceof String) {
-            String variable = (String) o;
-            if (!isLegalVariable(variable)) {
-                throw new BadInjectedFieldException(fieldName, getTaskName(),
-                        "'" + variable + "' is not a legal variable name");
-            }
-            return variable;
-        } else {
-            if (o != null) {
-                throw new BadInjectedFieldException(fieldName, getTaskName(),
-                        "expected a variable name string, got object of type " + o.getClass().getName());
-            } else {
-                throw new BadInjectedFieldException(fieldName, getTaskName(),
-                        "expected a variable name string, got null object");
-            }
-        }
-    }
-
-    /**
-     * Get the value of an optional output variable field. This method throws BadInjectedFieldException if the
-     * expression produces an illegal variable name. Legal variable names contain only letters, numbers, and the
-     * underscore character ('_').
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the output variable name, possibly null
-     */
-    protected String getOptionalOutputField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, true);
-        if (o instanceof String) {
-            String variable = (String) o;
-            if (!isLegalVariable(variable)) {
-                throw new BadInjectedFieldException(fieldName, getTaskName(),
-                        "'" + variable + "' is not a legal variable name");
-            }
-            return variable;
-        } else if (o == null) {
-            return null;
-        } else {
-            throw new BadInjectedFieldException(fieldName, getTaskName(),
-                    "expected a variable name string, got object of type " + o.getClass().getName());
-        }
-    }
-
-    /**
-     * Get the value of a required string field. This method throws MissingInjectedFieldException if the expression is
-     * null, and BadInjectedFieldException if the expression evaluates to a null value.
-     * <p>
-     * Note: the result is coerced to a string value, if necessary.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value
-     */
-    protected String getStringField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, false);
-        if (o instanceof String) {
-            return (String) o;
-        } else if (o != null) {
-            throw new BadInjectedFieldException(fieldName, getTaskName(),
-                    "cannot convert '" + o.toString() + "' to Integer");
-        } else {
-            throw new MissingInjectedFieldException(fieldName, getTaskName());
-        }
-    }
-
-    /**
-     * Gets the value of an optional string field. There are three conditions in which this method returns null:
-     * <p>
-     * <ol>
-     * <li>The expression itself is null (i.e. the field is missing altogether.</li>
-     * <li>The expression evaluates to a null value.</li>
-     * <li>The expression references a single variable which has not been set.</li>
-     * </ol>
-     * <p>
-     * Examples:<br>
-     * Expression ${x} when x is null: return null<br>
-     * Expression ${x} when x is unset: return null<br>
-     * Expression ${x+y} when x and/or y are unset: exception<br>
-     * <p>
-     * Note: the result is coerced to a string value, if necessary.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value, possibly null
-     */
-    protected String getOptionalStringField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, true);
-        if (o instanceof String) {
-            return (String) o;
-        } else if (o == null) {
-            return null;
-        } else {
-            return o.toString();
-        }
-    }
-
-    /**
-     * Get the value of a required integer field. This method throws MissingInjectedFieldException if the expression is
-     * null, and BadInjectedFieldException if the expression evaluates to a null value or a value that cannot be coerced
-     * to an integer.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value
-     */
-    protected Integer getIntegerField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, false);
-        if (o instanceof Integer) {
-            return (Integer) o;
-        } else {
-            try {
-                return Integer.parseInt(o.toString());
-            } catch (NumberFormatException e) {
-                if (o != null) {
-                    throw new BadInjectedFieldException(fieldName, getTaskName(),
-                            "cannot convert '" + o.toString() + "' to Integer");
-                } else {
-                    throw new MissingInjectedFieldException(fieldName, getTaskName());
-                }
-            }
-        }
-    }
-
-    /**
-     * Gets the value of an optional integer field. There are three conditions in which this method returns null:
-     * <p>
-     * <ol>
-     * <li>The expression itself is null (i.e. the field is missing altogether.</li>
-     * <li>The expression evaluates to a null value.</li>
-     * <li>The expression references a single variable which has not been set.</li>
-     * </ol>
-     * <p>
-     * Examples:<br>
-     * Expression ${x} when x is null: return null<br>
-     * Expression ${x} when x is unset: return null<br>
-     * Expression ${x+y} when x and/or y are unset: exception<br>
-     * <p>
-     * Note: the result is coerced to an integer value, if necessary. This method throws BadInjectedFieldException if
-     * the result cannot be coerced to an integer.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value, possibly null
-     */
-    protected Integer getOptionalIntegerField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, true);
-        if (o instanceof Integer) {
-            return (Integer) o;
-        } else if (o == null) {
-            return null;
-        } else {
-            try {
-                return Integer.parseInt(o.toString());
-            } catch (NumberFormatException e) {
-                throw new BadInjectedFieldException(fieldName, getTaskName(),
-                        "cannot convert '" + o.toString() + "' to Integer");
-            }
-        }
-    }
-
-    /**
-     * Gets the value of an optional long field. There are three conditions in which this method returns null:
-     * <p>
-     * <ol>
-     * <li>The expression itself is null (i.e. the field is missing altogether.</li>
-     * <li>The expression evaluates to a null value.</li>
-     * <li>The expression references a single variable which has not been set.</li>
-     * </ol>
-     * <p>
-     * Examples:<br>
-     * Expression ${x} when x is null: return null<br>
-     * Expression ${x} when x is unset: return null<br>
-     * Expression ${x+y} when x and/or y are unset: exception<br>
-     * <p>
-     * Note: the result is coerced to a long value, if necessary. This method throws BadInjectedFieldException if the
-     * result cannot be coerced to a long.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value, possibly null
-     */
-    protected Long getOptionalLongField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, true);
-        if (o instanceof Long) {
-            return (Long) o;
-        } else if (o == null) {
-            return null;
-        } else {
-            try {
-                return Long.parseLong(o.toString());
-            } catch (NumberFormatException e) {
-                throw new BadInjectedFieldException(fieldName, getTaskName(),
-                        "cannot convert '" + o.toString() + "' to Long");
-            }
-        }
-    }
-
-    /**
-     * Get the value of a required long field. This method throws MissingInjectedFieldException if the expression is
-     * null, and BadInjectedFieldException if the expression evaluates to a null value or a value that cannot be coerced
-     * to a long.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @return the field value
-     */
-    protected Long getLongField(Expression expression, DelegateExecution execution, String fieldName) {
-        Object o = getFieldImpl(expression, execution, fieldName, false);
-        if (o instanceof Long) {
-            return (Long) o;
-        } else {
-            try {
-                return Long.parseLong(o.toString());
-            } catch (NumberFormatException e) {
-                if (o != null) {
-                    throw new BadInjectedFieldException(fieldName, getTaskName(),
-                            "cannot convert '" + o.toString() + "' to Long");
-                } else {
-                    throw new MissingInjectedFieldException(fieldName, getTaskName());
-                }
-            }
-        }
-    }
-
-    /**
-     * Common implementation for field "getter" methods.
-     *
-     * @param expression the expression
-     * @param execution the execution
-     * @param fieldName the field name (for logging and exceptions)
-     * @param optional true if the field is optional
-     * @return the field value, possibly null
-     */
-    private Object getFieldImpl(Expression expression, DelegateExecution execution, String fieldName,
-            boolean optional) {
-        if (expression == null) {
-            if (!optional) {
-                throw new MissingInjectedFieldException(fieldName, getTaskName());
-            }
-            return null;
-        }
-
-        Object value = null;
-
-        try {
-            value = expression.getValue(execution);
-        } catch (Exception e) {
-            if (!optional) {
-                throw new BadInjectedFieldException(fieldName, getTaskName(), e.getClass().getSimpleName(), e);
-            }
-
-            // At this point, we have an exception that occurred while
-            // evaluating an expression for an optional field. A common
-            // problem is that the expression is a simple reference to a
-            // variable which has never been set, e.g. the expression is
-            // ${x}. The normal activiti behavior is to throw an exception,
-            // but we don't like that, so we have the following workaround,
-            // which parses the expression text to see if it is a "simple"
-            // variable reference, and if so, returns null. If the
-            // expression is anything other than a single variable
-            // reference, then an exception is thrown, as it would have
-            // been without this workaround.
-
-            // Get the expression text so we can parse it
-            String s = expression.getExpressionText();
-            new VariableNameExtractor(s).extract().ifPresent(name -> {
-                if (execution.hasVariable(name)) {
-                    throw new BadInjectedFieldException(fieldName, getTaskName(), e.getClass().getSimpleName(), e);
-                }
-            });
-        }
-
-        if (value == null && !optional) {
-            throw new BadInjectedFieldException(fieldName, getTaskName(), "required field has null value");
-        }
-
-        return value;
-    }
-
-    /**
-     * Tests if a character is a "word" character.
-     *
-     * @param c the character
-     * @return true if the character is a "word" character.
-     */
-    private static boolean isWordCharacter(char c) {
-        return (Character.isLetterOrDigit(c) || c == '_');
-    }
-
-    /**
-     * Tests if the specified string is a legal flow variable name.
-     *
-     * @param name the string
-     * @return true if the string is a legal flow variable name
-     */
-    private boolean isLegalVariable(String name) {
-        if (name == null) {
-            return false;
-        }
-
-        int len = name.length();
-
-        if (len == 0) {
-            return false;
-        }
-
-        char c = name.charAt(0);
-
-        if (!Character.isLetter(c) && c != '_') {
-            return false;
-        }
-
-        for (int i = 1; i < len; i++) {
-            c = name.charAt(i);
-            if (!Character.isLetterOrDigit(c) && c != '_') {
-                return false;
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Returns the name of the task (normally the java class name).
-     *
-     * @return the name of the task
-     */
-    public String getTaskName() {
-        return getClass().getSimpleName();
-    }
-
-    @Override
-    public void execute(DelegateExecution execution) throws Exception {}
-}