sli/common/src/main/java/org/onap/ccsdk/sli/core/sli/SvcLogicAtom.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : CCSDK
   4  * ================================================================================
   5  * Copyright (C) 2017 ONAP
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.ccsdk.sli.core.sli;
  22
  23 import java.io.Serializable;
  24 import java.util.LinkedList;
  25 import java.util.List;
  26
  27 public class SvcLogicAtom extends SvcLogicExpression {
  28
  29         public enum AtomType {
  30                 NUMBER,
  31                 STRING,
  32                 IDENTIFIER,
  33                 CONTEXT_VAR
  34
  35         }
  36
  37         private AtomType atomType;
  38         private String atom;
  39
  40
  41         public SvcLogicAtom(String atomType, String atom)
  42         {
  43                 this.atomType = AtomType.valueOf(atomType);
  44                 this.atom = atom;
  45
  46         }
  47
  48         public SvcLogicAtom(String atom)
  49         {
  50
  51                 if (atom == null)
  52                 {
  53                         this.atomType = null;
  54                         this.atom = null;
  55                 }
  56                 else
  57                 {
  58                         if (atom.startsWith("$"))
  59                         {
  60                                 this.atomType = AtomType.CONTEXT_VAR;
  61                                 this.atom = atom.substring(1);
  62                         }
  63                         else
  64                         {
  65                                 if (Character.isDigit(atom.charAt(0)))
  66                                 {
  67                                         this.atomType = AtomType.NUMBER;
  68                                         this.atom = atom;
  69                                 }
  70                                 else if (atom.charAt(0) == '\'')
  71                                 {
  72                                         this.atomType = AtomType.STRING;
  73                                         this.atom = atom.substring(1, atom.length()-1);
  74                                 }
  75                                 else
  76                                 {
  77                                         this.atomType = AtomType.IDENTIFIER;
  78                                         this.atom = atom;
  79
  80                                 }
  81
  82                         }
  83                 }
  84         }
  85
  86         public AtomType getAtomType() {
  87                 return atomType;
  88         }
  89
  90         public void setAtomType(String newType)
  91         {
  92                 atomType = AtomType.valueOf(newType);
  93         }
  94
  95         public String getAtom() {
  96                 return atom;
  97         }
  98
  99
 100
 101         public void setAtomType(AtomType atomType) {
 102                 this.atomType = atomType;
 103         }
 104
 105         public void setAtom(String atom) {
 106                 this.atom = atom;
 107         }
 108
 109
 110
 111         public String toString()
 112         {
 113                 StringBuffer sbuff = new StringBuffer();
 114                 switch(getAtomType())
 115                 {
 116                 case CONTEXT_VAR:
 117                         sbuff.append("$");
 118                 case IDENTIFIER:
 119                         boolean needDot = false;
 120                         for (SvcLogicExpression term: this.getOperands())
 121                         {
 122                                 if (needDot)
 123                                 {
 124                                         sbuff.append(".");
 125                                 }
 126                                 sbuff.append(term.toString());
 127                                 needDot = true;
 128                         }
 129                         return(sbuff.toString());
 130                 case STRING:
 131                 case NUMBER:
 132                 default:
 133                         return(atom);
 134                 }
 135         }
 136
 137         public String asParsedExpr()
 138         {
 139                 // simplify debugging output for NUMBER type
 140                 if (atomType == AtomType.NUMBER) {
 141                         return atom;
 142                 }
 143
 144                 StringBuffer sbuff = new StringBuffer();
 145
 146                 sbuff.append("(atom");
 147                 sbuff.append("<");
 148                 sbuff.append(atomType.toString());
 149                 sbuff.append(">");
 150
 151                 switch(atomType)
 152                 {
 153                 case IDENTIFIER:
 154                 case CONTEXT_VAR:
 155                         for (SvcLogicExpression term : getOperands())
 156                         {
 157                                 sbuff.append(" ");
 158                                 sbuff.append(term.asParsedExpr());
 159
 160                         }
 161                         break;
 162                 default:
 163                         sbuff.append(" ");
 164                         sbuff.append(atom);
 165                 }
 166
 167                 sbuff.append(")");
 168                 return(sbuff.toString());
 169         }
 170
 171
 172
 173 }