1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | |
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19 | #ifndef TYPEIDS_HH_ |
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20 | #define TYPEIDS_HH_ |
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21 | |
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22 | #include "recordio.hh" |
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23 | #include "fieldTypeInfo.hh" |
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24 | |
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25 | namespace hadoop { |
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26 | |
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27 | class FieldTypeInfo; |
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28 | |
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29 | /* |
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30 | * enum of types. We define assign values to individual bytes, rather |
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31 | * than use enums because we want to make teh values consistent with |
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32 | * Java code, so we need to control the values. |
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33 | */ |
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34 | const int8_t RIOTYPE_BOOL = 1; |
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35 | const int8_t RIOTYPE_BUFFER = 2; |
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36 | const int8_t RIOTYPE_BYTE = 3; |
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37 | const int8_t RIOTYPE_DOUBLE = 4; |
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38 | const int8_t RIOTYPE_FLOAT = 5; |
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39 | const int8_t RIOTYPE_INT = 6; |
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40 | const int8_t RIOTYPE_LONG = 7; |
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41 | const int8_t RIOTYPE_MAP = 8; |
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42 | const int8_t RIOTYPE_STRING = 9; |
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43 | const int8_t RIOTYPE_STRUCT = 10; |
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44 | const int8_t RIOTYPE_VECTOR = 11; |
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45 | |
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46 | |
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47 | |
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48 | /* |
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49 | * Represents typeID for basic types. |
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50 | * Serializes just the single int8_t. |
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51 | */ |
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52 | class TypeID { |
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53 | |
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54 | public: |
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55 | |
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56 | TypeID(int8_t typeVal) {this->typeVal = typeVal;} |
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57 | TypeID(const TypeID& t) {this->typeVal = t.typeVal;} |
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58 | virtual ~TypeID() {} |
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59 | |
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60 | int8_t getTypeVal() const {return typeVal;} |
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61 | virtual void serialize(::hadoop::OArchive& a_, const char* tag) const; |
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62 | |
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63 | virtual bool operator==(const TypeID& peer_) const; |
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64 | virtual TypeID* clone() const {return new TypeID(*this);} |
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65 | |
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66 | virtual void print(int space=0) const; |
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67 | |
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68 | protected: |
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69 | int8_t typeVal; |
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70 | }; |
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71 | |
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72 | |
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73 | /* |
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74 | * no predefined TypeID objects, since memory management becomes difficult. |
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75 | * If some TypeID objects are consts and others are new-ed, becomes hard to |
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76 | * destroy const objects without reference counting. |
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77 | */ |
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78 | /*const TypeID TID_BoolTypeID(RIOTYPE_BOOL); |
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79 | const TypeID TID_BufferTypeID(RIOTYPE_BUFFER); |
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80 | const TypeID TID_ByteTypeID(RIOTYPE_BYTE); |
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81 | const TypeID TID_DoubleTypeID(RIOTYPE_DOUBLE); |
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82 | const TypeID TID_FloatTypeID(RIOTYPE_FLOAT); |
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83 | const TypeID TID_IntTypeID(RIOTYPE_INT); |
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84 | const TypeID TID_LongTypeID(RIOTYPE_LONG); |
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85 | const TypeID TID_StringTypeID(RIOTYPE_STRING);*/ |
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86 | |
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87 | |
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88 | /* |
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89 | * TypeID for structures |
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90 | */ |
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91 | class StructTypeID : public TypeID { |
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92 | |
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93 | private: |
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94 | // note: we own the memory mgmt of TypeInfo objects stored in the vector |
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95 | std::vector<FieldTypeInfo*> typeInfos; |
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96 | FieldTypeInfo* genericReadTypeInfo(::hadoop::IArchive& a_, const char* tag); |
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97 | TypeID* genericReadTypeID(::hadoop::IArchive& a_, const char* tag); |
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98 | |
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99 | public: |
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100 | /*StructTypeID(const char* p); |
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101 | StructTypeID(std::string* p); |
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102 | StructTypeID(const StructTypeID& ti);*/ |
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103 | StructTypeID(): TypeID(RIOTYPE_STRUCT) {}; |
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104 | StructTypeID(const std::vector<FieldTypeInfo*>& vec); |
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105 | virtual ~StructTypeID(); |
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106 | |
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107 | void add(FieldTypeInfo *pti); |
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108 | std::vector<FieldTypeInfo*>& getFieldTypeInfos() {return typeInfos;} |
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109 | StructTypeID* findStruct(const char *pStructName); |
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110 | void serialize(::hadoop::OArchive& a_, const char* tag) const; |
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111 | void serializeRest(::hadoop::OArchive& a_, const char* tag) const; |
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112 | void deserialize(::hadoop::IArchive& a_, const char* tag); |
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113 | virtual TypeID* clone() const {return new StructTypeID(*this);} |
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114 | |
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115 | virtual void print(int space=0) const; |
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116 | |
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117 | }; |
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118 | |
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119 | |
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120 | /* |
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121 | * TypeID for vectors |
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122 | */ |
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123 | class VectorTypeID : public TypeID { |
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124 | |
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125 | private: |
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126 | // ptiElement's memory mgmt is owned by class |
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127 | TypeID* ptiElement; |
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128 | |
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129 | public: |
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130 | VectorTypeID(TypeID* ptiElement): TypeID(RIOTYPE_VECTOR), ptiElement(ptiElement) {} |
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131 | VectorTypeID(const VectorTypeID& ti); |
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132 | virtual ~VectorTypeID(); |
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133 | |
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134 | const TypeID* getElementTypeID() {return ptiElement;} |
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135 | virtual TypeID* clone() const {return new VectorTypeID(*this);} |
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136 | void serialize(::hadoop::OArchive& a_, const char* tag) const; |
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137 | virtual bool operator==(const TypeID& peer_) const; |
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138 | |
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139 | virtual void print(int space=0) const; |
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140 | }; |
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141 | |
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142 | /* |
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143 | * TypeID for maps |
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144 | */ |
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145 | class MapTypeID : public TypeID { |
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146 | |
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147 | private: |
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148 | // ptiKay and ptiValue's memory mgmt is owned by class |
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149 | TypeID* ptiKey; |
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150 | TypeID* ptiValue; |
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151 | |
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152 | public: |
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153 | MapTypeID(TypeID* ptiKey, TypeID* ptiValue): |
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154 | TypeID(RIOTYPE_MAP), ptiKey(ptiKey), ptiValue(ptiValue) {} |
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155 | MapTypeID(const MapTypeID& ti); |
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156 | virtual ~MapTypeID(); |
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157 | |
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158 | const TypeID* getKeyTypeID() {return ptiKey;} |
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159 | const TypeID* getValueTypeID() {return ptiValue;} |
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160 | virtual TypeID* clone() const {return new MapTypeID(*this);} |
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161 | void serialize(::hadoop::OArchive& a_, const char* tag) const; |
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162 | virtual bool operator==(const TypeID& peer_) const; |
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163 | |
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164 | virtual void print(int space=0) const; |
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165 | }; |
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166 | |
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167 | } |
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168 | #endif // TYPEIDS_HH_ |
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169 | |
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