1 | <?php |
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2 | |||
3 | /** |
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4 | * Bluz Framework Component |
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5 | * |
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6 | * @copyright Bluz PHP Team |
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7 | * @link https://github.com/bluzphp/framework |
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8 | */ |
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9 | |||
10 | declare(strict_types=1); |
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11 | |||
12 | namespace Bluz\Db\Query\Traits; |
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13 | |||
14 | use Bluz\Proxy\Db; |
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15 | |||
16 | /** |
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17 | * From Trait |
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18 | * |
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19 | * Required for: |
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20 | * - Select Builder |
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21 | * - Delete Builder |
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22 | * |
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23 | * @package Bluz\Db\Query\Traits |
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24 | * @author Anton Shevchuk |
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25 | */ |
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26 | trait From |
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27 | { |
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28 | /** |
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29 | * <code> |
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30 | * [ |
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31 | * 'table' => 'users', |
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32 | * 'alias' => 'u' |
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33 | * ] |
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34 | * </code> |
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35 | * |
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36 | * @var array |
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37 | */ |
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38 | protected $from = []; |
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39 | |||
40 | /** |
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41 | * <code> |
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42 | * [ |
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43 | * 'u' => [ |
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44 | * 'joinType' => 'inner', |
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45 | * 'joinTable' => $join, |
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46 | * 'joinAlias' => $alias, |
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47 | * 'joinCondition' => $condition |
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48 | * ] |
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49 | * </code> |
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50 | * |
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51 | * @var array[] |
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52 | */ |
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53 | protected $join = []; |
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54 | |||
55 | /** |
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56 | * Set FROM |
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57 | * |
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58 | * Create and add a query root corresponding to the table identified by the |
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59 | * given alias, forming a cartesian product with any existing query roots |
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60 | * |
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61 | * <code> |
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62 | * $sb = new SelectBuilder(); |
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63 | * $sb |
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64 | * ->select('u.id') |
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65 | * ->from('users', 'u') |
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66 | * </code> |
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67 | * |
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68 | * @param string $from The table |
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69 | * @param string $alias The alias of the table |
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70 | * |
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71 | * @return $this |
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72 | */ |
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73 | 8 | public function from(string $from, string $alias): self |
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74 | { |
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75 | 8 | $this->aliases[] = $alias; |
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76 | |||
77 | 8 | $this->from[] = [ |
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78 | 8 | 'table' => $from, |
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79 | 8 | 'alias' => $alias |
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80 | ]; |
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81 | |||
82 | 8 | return $this; |
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83 | } |
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84 | |||
85 | /** |
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86 | * Creates and adds a join to the query |
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87 | * |
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88 | * Example |
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89 | * <code> |
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90 | * $sb = new Select(); |
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91 | * $sb |
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92 | * ->select('u.name') |
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93 | * ->from('users', 'u') |
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94 | * ->join('u', 'phone', 'p', 'p.is_primary = 1'); |
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95 | * </code> |
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96 | * |
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97 | * @param string $fromAlias The alias that points to a from clause |
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98 | * @param string $join The table name to join |
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99 | * @param string $alias The alias of the join table |
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100 | * @param string $condition The condition for the join |
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101 | * |
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102 | * @return $this |
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103 | */ |
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104 | 2 | public function join(string $fromAlias, string $join, string $alias, string $condition = null): self |
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105 | { |
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106 | 2 | return $this->innerJoin($fromAlias, $join, $alias, $condition); |
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107 | } |
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108 | |||
109 | /** |
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110 | * Creates and adds a join to the query |
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111 | * |
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112 | * Example |
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113 | * <code> |
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114 | * $sb = new Select(); |
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115 | * $sb |
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116 | * ->select('u.name') |
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117 | * ->from('users', 'u') |
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118 | * ->innerJoin('u', 'phone', 'p', 'p.is_primary = 1'); |
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119 | * </code> |
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120 | * |
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121 | * @param string $fromAlias The alias that points to a from clause |
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122 | * @param string $join The table name to join |
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123 | * @param string $alias The alias of the join table |
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124 | * @param string $condition The condition for the join |
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125 | * |
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126 | * @return $this |
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127 | */ |
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128 | 2 | public function innerJoin(string $fromAlias, string $join, string $alias, string $condition = null): self |
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129 | { |
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130 | 2 | return $this->addJoin('inner', $fromAlias, $join, $alias, $condition); |
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131 | } |
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132 | |||
133 | /** |
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134 | * Creates and adds a left join to the query. |
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135 | * |
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136 | * Example |
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137 | * <code> |
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138 | * $sb = new Select(); |
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139 | * $sb |
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140 | * ->select('u.name') |
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141 | * ->from('users', 'u') |
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142 | * ->leftJoin('u', 'phone', 'p', 'p.is_primary = 1'); |
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143 | * </code> |
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144 | * |
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145 | * @param string $fromAlias The alias that points to a from clause |
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146 | * @param string $join The table name to join |
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147 | * @param string $alias The alias of the join table |
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148 | * @param string $condition The condition for the join |
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149 | * |
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150 | * @return $this |
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151 | */ |
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152 | 1 | public function leftJoin(string $fromAlias, string $join, string $alias, string $condition = null): self |
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153 | { |
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154 | 1 | return $this->addJoin('left', $fromAlias, $join, $alias, $condition); |
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155 | } |
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156 | |||
157 | /** |
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158 | * Creates and adds a right join to the query. |
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159 | * |
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160 | * Example |
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161 | * <code> |
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162 | * $sb = new Select(); |
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163 | * $sb |
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164 | * ->select('u.name') |
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165 | * ->from('users', 'u') |
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166 | * ->rightJoin('u', 'phone', 'p', 'p.is_primary = 1'); |
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167 | * </code> |
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168 | * |
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169 | * @param string $fromAlias The alias that points to a from clause |
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170 | * @param string $join The table name to join |
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171 | * @param string $alias The alias of the join table |
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172 | * @param string $condition The condition for the join |
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173 | * |
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174 | * @return $this |
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175 | */ |
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176 | 1 | public function rightJoin(string $fromAlias, string $join, string $alias, string $condition = null): self |
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177 | { |
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178 | 1 | return $this->addJoin('right', $fromAlias, $join, $alias, $condition); |
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179 | } |
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180 | |||
181 | /** |
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182 | * addJoin() |
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183 | * |
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184 | * @param string $type The type of join |
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185 | * @param string $fromAlias The alias that points to a from clause |
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186 | * @param string $join The table name to join |
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187 | * @param string $alias The alias of the join table |
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188 | * @param string $condition The condition for the join |
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189 | * |
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190 | * @return $this |
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191 | */ |
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192 | 4 | protected function addJoin( |
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193 | string $type, |
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194 | string $fromAlias, |
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195 | string $join, |
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196 | string $alias, |
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197 | string $condition = null |
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198 | ): self { |
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199 | 4 | $this->aliases[] = $alias; |
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200 | |||
201 | 4 | $this->join[$fromAlias][] = [ |
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202 | 4 | 'joinType' => $type, |
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203 | 4 | 'joinTable' => $join, |
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204 | 4 | 'joinAlias' => $alias, |
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205 | 4 | 'joinCondition' => $condition |
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206 | ]; |
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207 | 4 | return $this; |
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208 | } |
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209 | |||
210 | /** |
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211 | * setFromQueryPart |
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212 | * |
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213 | * @param string $table |
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214 | * |
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215 | * @return self |
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216 | */ |
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217 | protected function setFromQueryPart($table): self |
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218 | { |
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219 | return $this->from($table, $table); |
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220 | } |
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221 | |||
222 | /** |
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223 | * Prepare From query part |
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224 | * |
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225 | * @return string |
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226 | */ |
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227 | 8 | protected function prepareFrom(): string |
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228 | { |
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229 | 8 | $fromClauses = []; |
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230 | // Loop through all FROM clauses |
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231 | 8 | foreach ($this->from as $from) { |
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232 | 8 | $fromClause = Db::quoteIdentifier($from['table']) . ' AS ' . Db::quoteIdentifier($from['alias']) |
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233 | 8 | . $this->prepareJoins($from['alias']); |
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234 | |||
235 | 8 | $fromClauses[$from['alias']] = $fromClause; |
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236 | } |
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237 | |||
238 | 8 | return ' FROM ' . implode(', ', $fromClauses); |
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239 | } |
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240 | |||
241 | /** |
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242 | * Generate SQL string for JOINs |
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243 | * |
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244 | * @param string $fromAlias The alias of the table |
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245 | * |
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246 | * @return string |
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247 | */ |
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248 | 8 | protected function prepareJoins($fromAlias): string |
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249 | { |
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250 | 8 | if (!isset($this->join[$fromAlias])) { |
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251 | 8 | return ''; |
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252 | } |
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253 | |||
254 | 4 | $query = ''; |
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255 | |||
256 | 4 | foreach ($this->join[$fromAlias] as $join) { |
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257 | 4 | $query .= ' ' . strtoupper($join['joinType']) |
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258 | 4 | . ' JOIN ' . Db::quoteIdentifier($join['joinTable']) . ' AS ' . Db::quoteIdentifier($join['joinAlias']) |
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259 | 4 | . ' ON ' . $join['joinCondition']; |
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260 | 4 | $query .= $this->prepareJoins($join['joinAlias']); |
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261 | } |
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262 | |||
263 | 4 | return $query; |
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264 | } |
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265 | } |
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266 |